241. refreshment [rɪ'freʃmənt]
n.①(pl.)茶点，点心和饮料 ②恢复精力
✎ 示例：
Having not yet lunched, we went to the refreshment bar for ham sandwiches.我们都没吃午饭，于是便去小吃店买了火腿三明治。

242. renovate ['renəveɪt]
vt.修复，整修
✎ 示例：
The school master has accepted proposals to renovate the old schoolhouses.校长已经接受了翻新旧校舍的提议。

243. repay [rɪ'peɪ]
vt.①归还 ②偿还
✎ 示例：
I can never repay you for your kindness.我永远也无法报答你的好意。

244. reside [rɪ'zaɪd]
vi.居住
✎ 示例：
The true face of Lushan is lost to my sight, for it is right in this mountain that I reside.不识庐山真面目，只缘身在此山中。

245. ridicule [rɪdɪkjuːl]
vt./n.嘲笑，奚落
✎ 示例：
I admired her all the more for allowing them to ridicule her and never striking back.她能听任他们嘲笑却从不还击，这让我更加敬佩她。

246. romance [rəʊ'mæns]
n.①恋爱(关系) ②浪漫气氛
✎ 示例：
We want to recreate the romance and excitement that used to be part of rail journeys.我们想再度营造以前坐火车旅行的浪漫和兴奋。

247. runway [ˈrʌnweɪ]
n.①飞机跑道 ②T型台
✎ 示例：
As the aeroplane went down the runway the wing touched a pile of rubble.飞机降落沿跑道滑行的时候机翼擦到了一堆碎石。

248. scent [sent]
n.①香味 ②香水
✎ 示例：
I like the sweet scent of ripe fruit.我喜欢成熟水果那种甜甜的香味。

249. setback [ˈsetbæk]
n.挫折,阻碍
✎ 示例：
Our business had a nasty setback.我们的业务遇到极大的挫折。

250. shit [ʃɪt]
n.①讨厌的家伙 ②粪便 ③(sing.)拉屎 ④废话int.(表示恼怒)胡说！
✎ 示例：
You're in a world of shit! 你的麻烦大了！

251. shrimp [ʃrɪmp]
n.①小虾 ②矮小的人
✎ 示例：
They drifted on the lake, fishing and catching shrimp to get by. 他们漂泊湖上，以打鱼捕虾为生。

252. situate [ˈsɪtʃueɪt]
vt.①使坐落于 ②将……置于
✎ 示例：
The village is situated in a valley. 这个村子处于一山谷中。

253. skyline ['skaɪlaɪn]
n.(建筑物、树、山等在天空映衬下的)轮廓线
✎ 示例：
Chicago city has the most beautiful skyline in the world.芝加哥有世界上最美丽的城市天际线。

254. snack [snæk]
n.（正餐以外的）快餐,小吃,点心
✎ 示例：
Today, chocolate can be a hot drink, a frozen dessert, or just a snack. 今天，巧克力可以是一种热饮，一种冰冻的饭后甜点，或者就只是一种小吃。

255. soar [sɔː]
vi.①猛增,剧增 ②高飞,升腾 ③高耸,屹立 ④(情绪、期望等)高涨
✎ 示例：
If the birds have not flown for three years, they will soar into the clouds. If they have not sung for three years, their songs will take everyone by surprise. 三年不蜚，蜚将冲天；三年不鸣，鸣将惊人。

256. sparkle ['spɑːkl]
vi.①闪耀,发光 ②（眼睛）发亮
✎ 示例：
She sparkled as a performer.她作为一名演员才华出众。

257. staircase ['steəkeɪs]
n.楼梯

258. staple [ 'steɪpl]
n.①订书钉 ②主食
✎ 示例：
The Chinese also eat a type of pasta as part of their staple diet.中国人也把一种面食作为他们的主食之一。

259. statute ['stætʃuːt]
n.法规，法令，条例
✎ 示例：
The new statute covers the care for, bringing up and protection of children.新法令涵盖了儿童保育、养育和保护的相关内容。

260. stool [stuːl]
n.①凳子 ②大便，粪便
✎ 示例：
The stool had a torn, red plastic seat. 那个凳子的红色塑料座面已经破旧不堪。

261. strive [straɪv]
vi.(for,against)努力,奋斗
✎ 示例：
As far as quality is concerned, we must not make do with what we have, but must constantly strive for excellence.在质量方面，不能将就，要精益求精。

262. surname ['sɜːneɪm]
n.姓
✎ 示例：
The majority of British women adopt their husband's surname when they marry. 大多数英国女性结婚后随夫姓。

263. swipe [swaɪp]
v.①挥拳打 ②偷窃 ③刷(磁卡)  n.①重击，猛打 ②抨击，谴责
✎ 示例：
There's something wrong with the swipe machine, so you would better pay with cash. 刷卡机出了点问题，您最好付现金。

264. takeoff [ 'teɪkɒf]
n.(飞机或火箭)起飞,升空
✎ 示例：
The jet crashed soon after takeoff, killing all the passengers and crew.那架喷气式飞机起飞后不久就坠毁了，所有乘客和机组人员无一生还。

265. tangible [ 'tændʒəbl]
a.①确实的 ②可触知的，有形的
✎ 示例：
The plan brought few tangible benefits to the students.这个计划没有给学生带来多少实际好处。

266. telecommunications ['telɪkəmjuːnɪ 'keɪtʃnz]
n.(pl.)电信，电讯［△简写为telecoms］
✎ 示例：
The television screens of the next century will be linked up to an emerging world telecommunications grid. 下个世纪的电视屏幕将会接入到正在形成的全球电信网络中。

267. tenant [ 'tenənt]
n.房客，租户
✎ 示例：
The desk was left by the previous tenant.这张桌子是前任房客留下的。

268. terrific [tə'rɪfɪk]
a.①极好的 ②极其巨大的
✎ 示例：
There's a terrific restaurant in South Street.南大街新开了一家饭馆，好极了。

269. thanksgiving [ 'θæŋksɡɪvɪŋ]
n.①感恩节 ②感恩
✎ 示例：
Thanksgiving is a movable holiday.感恩节的日期每年不同。

270. thesis [ 'θiːsɪs]
n.①论文 ②论点 ③（文章的）主题
✎ 示例：
He was awarded his PhD for a thesis on industrial robots. 他凭一篇研究工业机器人的论文获得博士学位。

271. transcript ['trænskrɪpt]
n.①抄本 ②学生成绩报告单
✎ 示例：
Have a copy of your high school transcript and resume at hand. 准备一份你高中的成绩报告单和个人履历。

272. transit  ['trænsɪt]
n.载运,运输
✎ 示例：
During their talks, the two presidents discussed the transit of goods between the two countries. 会谈中，两位总统讨论了两国间货物运输的问题。

 
273. trigger ['trɪɡə]
vt.①引起，激发 ②开动 n.①(枪的)扳机
✎ 示例：
Even a problem as simple as a bad back often has an underlying triggering factor.甚至像背疼这样的小问题都常常有潜在的诱发因素。

274. triple [trɪpl]
a.①三部分的 ②三倍的 vt.使增至三倍
✎ 示例：
I got a fantastic new job and my salary tripled.我得到了一份非常好的新工作，薪水涨到了原来的3倍。

275. trolley [ˈtrɒli]
n.①手推车,小车 ②(AmE)有轨电车
✎ 示例：
A porter relieved her of the three large cases she had been pushing on a trolley. 搬运工帮她卸下了她一直用手推车推着的3个大箱子。

276. tuition [tju'ɪʃn]
n.①学费 ②教学,讲课
✎ 示例：
The courses will give the beginner personal tuition in all types of outdoor photography.该课程将为初学者一对一地讲授各种户外摄影技巧。

277. tumor ['tjuːmə]
n.瘤，肿瘤，肿块
✎ 示例：
Just a few tumor cells in blood are enough to spread cancer to other parts of the body.在血液中，仅少数肿瘤细胞就可以将癌症转移到身体的其它部分。

 
278. underdeveloped [ ˌʌndədɪˈveləpt]
a.(国家、地区等)经济不发达的
✎ 示例：
For underdeveloped countries, improved health and education are urgently needed.对不发达国家来讲，当务之急是改善健康和教育状况。

279. underestimate [ ˌʌndər'estɪmeɪt]
vt.低估
✎ 示例：
Never underestimate the power of a woman.决不能低估女人的能力。

280. unemployed [ ˌʌnɪm'plɔɪd ]
a.失业的，待岗的
✎ 示例：
Her husband is unemployed and the family depends on charity. 她丈夫失业了，全家人靠救济金过日子。

281. upgrade [ʌp'ɡreɪd]vt. ['ʌpɡreɪd]n.
vt.①使(计算机等)升级 ②提高，改善（尤指服务）③给（某人）升职 n.向上的斜坡
✎ 示例：
She was upgraded to sales director.她被提升为销售部主任。

282. vendor [ˈvendə]
n.①小贩，摊贩 ②(某种产品的)销售公司 ③(房屋等的)卖主
✎ 示例：
Remember, the estate agent is working for the vendor. 记住，房地产代理商是为房地产卖方服务的。

283. versus [ ˈvsɜːs]
prep.①对抗 ②与……相对
△ versus用于指比赛或诉讼中一方“对”另一方,缩略为v.或vs.
✎ 示例：
Have you watched the game last night? It was France versus Italy.昨天晚上的比赛你看了吗？是法国队对意大利队。

284. vigor [ 'vɪɡə]
n.活力,精力
✎ 示例：
This is a season of spring, as the youth we have, full of vigor and vitality.这是一个春意盎然的季节，就像我们所拥有的青春一样，充满生机和活力。

285. vocation [vəʊˈkeɪʃn]
n.使命感
✎ 示例：
Trades union leadership in those days was less a career than a vocation.那时候的工会领导与其说是一份职业，倒不如说是一种使命。

286. vulnerable [ 'vʌlnərəbl]
a.①脆弱的 ②易受攻击的
✎ 示例：
People with high blood pressure are especially vulnerable to diabetes.有高血压的人尤其易患糖尿病。

287. ware [weə]
a.留神的，注意的 v.当心，谨防
✎ 示例：
Without proposal, be ware of possibly having no bride on your wedding day. 不求婚，小心结婚当天没有新娘。

288. warfare [wɔːfeə]
n.①战争(状态) ②斗争,冲突
✎ 示例：
The signal is clear: the cyber warfare is no science fiction anymore. 演习发出了一个明显的信号：网络战不再是科幻小说了。

289. warrior ['wɒriə]
n.武士，勇士，斗士
✎ 示例：
Like all boys, I dream of becoming a warrior. 和所有的男孩一样，我梦想着成为一名勇士。

290. wary ['weəri]
a.(对待人或事物时)谨慎的，小心的
✎ 示例：
Let us be honest: We know that some are wary of the future. 请允许我直言不讳：我们知道有些人对未来小心翼翼。

291. watertight ['wɔːtətaɪt]
a.①防水的 ②无懈可击的
✎ 示例：
The police had a watertight case. They even got his fingerprints from that glass cabinet.警方找到了确凿的证据。他们甚至在那个玻璃橱柜上提取到了他的指纹。

292. wilderness [ˈwildənəs]
n.①荒野 ②荒芜的地方
✎ 示例：
He is proud of the garden he made from a wilderness.他为自己从荒地上开辟出的花园而感到自豪。

293. willpower [ 'wɪlpaʊə]
n.意志力
✎ 示例：
They had the drive, determination, and willpower that you have right now.他们有你现在拥有的动力、决心和毅力。

294. workout [ˈwɜːkaʊt]
n.体育锻炼，训练
✎ 示例：
Just one simple workout can ease stress and anxiety.仅仅一种简单的锻炼就可以减轻紧张和焦虑。

295. zoology [zu'ɒlədʒi]
n.动物学
✎ 示例：
It is the branch of zoology that studies the behavior of animals in their natural habitats.它是动物学中研究动物在其自然生活环境中的行为的分支。