adj. 1.额外的，附加的，补充的。 2.另外收费的。 3.特大的；特优的，特级的。 短语和例子 an extra loss 额外损失。 an extra train 加车。 an extra allowance 特别津贴。 an extra edition 特号，临时增刊。 extra news 号外。 extra girls [ladies] 临时女演员。 an extra hand 临时工。 Dinner 5 s., wine extra. 晚餐五先令，酒资在外。 without extra charge 不另收费。 It is nothing extra. 没有什么了不起的。 n. 1.外加物；赠品，附加物；额外人手[津贴]；(报纸的)号外。 2.特号；特级品。 3.【电影】临时演员 〔cf. supernumerary〕。 4.【板球】额外得分。 短语和例子 a real extra 上等产品〔广告用语〕。 adv. 1.额外地，另外地。 2.格外地，非常地。 短语和例子 extra good wine 特好葡萄酒。 an extra special (edition) 最后版晚报特刊。 be charged extra 额外收费。 try extra hard 特别尽力地试试看。
unusually or exceptionally; "an extra fast car"
unusually or exceptionally; "an extra fast car"
further or added; "called for additional troops"; "need extra help"; "an extra pair of shoes" 同义词：additional,
more than is needed, desired, or required; "trying to lose excess weight"; "found some extra change lying on the dresser"; "yet another book on heraldry might be thought redundant"; "skills made redundant by technological advance"; "sleeping in the spare room"; "supernumerary ornamentation"; "it was supererogatory of her to gloat"; "delete superfluous (or unnecessary) words"; "extra ribs as well as other supernumerary internal parts"; "surplus cheese distributed to the needy" 同义词：excess, redundant, spare, supererogatory, superfluous, supernumerary, surplus,
added to a regular schedule; "a special holiday flight"; "put on special buses for the big game" 同义词：special,
something additional of the same kind; "he always carried extras in case of an emergency" 同义词：duplicate,
an additional edition of a newspaper (usually to report a crisis)
a minor actor in crowd scenes 同义词：supernumerary, spear carrier,
例句与用法
1.
Small extra costs all swell the total . 零星的额外费用使总数增大了。
2.
Price 5 yuan, packing and postage extra . 包装和邮费在外，价格五元。
3.
If extra work crops up, he'll help . 如果突然有加班，他一定会帮忙。
4.
Where does the extra energy come from ? 这些额外的能量是从哪里来的呢？
5.
He paid the extra cost without a murmur . 他毫无怨言地付了额外的费用。
6.
Our immediate requirement is extra staff . 我们亟需增加工作人员。
7.
I will buy extra meat and just freeze it . 我要多买些肉冷藏起来。
8.
Clearly there is some extra restriction . 显然，还存在有某种附加的限制。
9.
The company compensates her for extra work . 公司因她的额外工作而报酬她。
10.
If need be , i can do extra work at the weekend . 必要时我可以在周末加班。
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