n. 1.记号，符号。 2.信号，暗号。 3.(示意的)姿势，手势；表示。 4.招牌，广告(牌)。 5.形迹、痕迹〔常与 no 连用〕；〔美国〕(野兽的)足迹。 6.证据；预兆；朕兆；性状；【医学】症状。 7.【圣经】奇迹。 8.【天文学】(黄道十二宫的)宫。 9.〔罕用语〕徽章；旗。 短语和例子 deaf-and-dumb signs 聋哑人的手势；聋哑字母。 talk in signs 用手势表达想说的话，打手势语。 sign of assent 同意的表示。 a call sign 呼号。 signs and wonders 奇迹。 sign and countersign 问答口令；暗语问答，暗号。 bear the sign of the times 带有时代的特征。 give the high sign 〔美国〕发出信号〔尤指危险的信号〕。 in sign of 作为…的记号。 make a sign to 对…作暗号[打手势]。 make no sign of 没有…的样子[征象]。 show a sign of 现出…的样子或形迹，有…的征兆。 sign of the cross 划押，作为签名的十字记号；用手划的十字。 There are signs of.... 有…的征象。 vt. 1.用信号表示，做姿势通知；预示。 2.签名于，署名于，画押于；签名盖章约定；〔美国〕使签名，使订约；(签名)雇用；加记号于。 3.画十字于。 vi. 用姿势通知，打手势，使眼色，做暗号；签名；订契约 (on)。 signed and sealed 签了名盖了章。 signed, sealed, and delivered 【法律】已签名盖章交还，决定。 The treaty was signed today. 条约今天签了字了。 He signed to me to enter the garden. 他招手要我进园里。 signassent (用动作)表示同意。 sign away 在证书上签字让与(财产等)。 sign for 签收。 sign in (使)签到[报到，登记]。 sign off 【无线电】 1. 广播完毕，收播。 2. 签字发誓戒绝；废除(契约)；断绝(关系)。3.〔美俚〕停止讲话，住嘴，停止。4.签字结束(写信等)。sign on 签字聘用[就聘]；签字承认；作工作记录。 sign over＝ sign away. sign up 〔美口〕签字应征[应聘，受雇]；(报名)参加。
used of the language of the deaf 同义词：gestural, signed, sign-language,
make the sign of the cross over someone in order to call on God for protection; consecrate 同义词：bless,
be engaged by a written agreement; "He signed to play the casino on Dec. 18"; "The soprano signed to sing the new opera"
communicate in sign language; "I don''t know how to sign, so I could not communicate with my deaf cousin"
mark with one''s signature; write one''s name (on); "She signed the letter and sent it off"; "Please sign here" 同义词：subscribe,
communicate silently and non-verbally by signals or signs; "He signed his disapproval with a dismissive hand gesture"; "The diner signaled the waiters to bring the menu" 同义词：signal, signalize, signalise,
place signs, as along a road; "sign an intersection"; "This road has been signed"
engage by written agreement; "They signed two new pitchers for the next season" 同义词：contract, sign on, sign up,
approve and express assent, responsibility, or obligation; "All parties ratified the peace treaty"; "Have you signed your contract yet?" 同义词：ratify,
structure displaying a board on which advertisements can be posted; "the highway was lined with signboards" 同义词：signboard,
a perceptible indication of something not immediately apparent (as a visible clue that something has happened); "he showed signs of strain"; "they welcomed the signs of spring" 同义词：mark,
any nonverbal action or gesture that encodes a message; "signals from the boat suddenly stopped" 同义词：signal, signaling,
a public display of a message; "he posted signs in all the shop windows"
a character indicating a relation between quantities; "don''t forget the minus sign"
a gesture that is part of a sign language
a fundamental linguistic unit linking a signifier to that which is signified; "The bond between the signifier and the signified is arbitrary"--de Saussure
an event that is experienced as indicating important things to come; "he hoped it was an augury"; "it was a sign from God" 同义词：augury, foretoken, preindication,
(astrology) one of 12 equal areas into which the zodiac is divided 同义词：sign of the zodiac, star sign, mansion, house, planetary house,
having an indicated pole (as the distinction between positive and negative electric charges); "he got the polarity of the battery reversed"; "charges of opposite sign" 同义词：polarity,
(medicine) any objective evidence of the presence of a disorder or disease; "there were no signs of asphyxiation"
A sign is a representation of an object that implies a connection between itself and its object. A natural sign bears a causal relation to its object?for instance, thunder is a sign of storm.
例句与用法
1.
The two countries signed a cultural agreement . 两国签订了文化协定。
2.
There is no sign of him mending his ways . 看不出他有改进方式的迹象。
3.
The agreement was signed in june 1884 . 这个条约是在1884年6月签订的。
4.
The king signed the instrument of abdication . 国王签署了逊位的文告。
5.
Can you make out what that sign says ? 你看得见牌子上写的是什么吗？
6.
Buds on the trees are a sign of spring . 树上的萌芽是春天来临的征兆。
7.
Can i sign up for this course in advance ? 我能事先申请上这一课程吗？
8.
Congestion of the mucosa is a variable sign . 粘膜充血是不恒定的表现。
9.
These autopsy protocols have to be signed . 这些验尸报告必须签署。
10.
But no sign of any intruders can be found . 结果并未发现有人撞入家中。
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