1. a perceptible indication of something not immediately apparent (as a visible clue that something has happened)

同义词：mark

2. a public display of a (usually written) message

3. any communication that encodes a message

同义词：signal, signaling

4. structure displaying a board on which advertisements can be posted

同义词：signboard

5. (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

6. (medicine) any objective evidence of the presence of a disorder or disease

7. having an indicated pole (as the distinction between positive and negative electric charges)

同义词：polarity

8. an event that is experienced as indicating important things to come

同义词：augury, foretoken, preindication

9. a gesture that is part of a sign language

10. a fundamental linguistic unit linking a signifier to that which is signified--de Saussure

11. a character indicating a relation between quantities

1. mark with one's signature; write one's name (on)

同义词：subscribe

2. approve and express assent, responsibility, or obligation

同义词：ratify

3. be engaged by a written agreement

4. engage by written agreement

同义词：contract, sign on, sign up

5. communicate silently and non-verbally by signals or signs

同义词：signal, signalize, signalise

6. place signs, as along a road

7. communicate in sign language

8. make the sign of the cross over someone in order to call on God for protection; consecrate

同义词：bless

1. used of the language of the deaf

同义词：gestural, signed, sign-language

习惯用语 at the sign of 当有

at the sign of 象时

bear the sign of the times 带有时代的特徵

give the high sign [美]发出信号

have the Indian sign on 用魔法迷住...; 对...施以魅力

put the Indian sign on 用魔法迷住...; 对...施以魅力

in sign of 作为...的记号[标誌]

make a sign to 对...作暗号[打手势]

make no sign of 没有动静[迹象]

show a sign of 现出...的样子或形迹, 有...的徵兆

There are signs of ... 有...的徵象。

sign away 在证书上籤字让与(财产等)

sign off 在证书上籤字让与(财产等)

sign in 签到 签收

sign manual 亲笔签名(尤指国王的)

sign and countersign 口令的问答; 暗语, 暗号

sign of the cross 划押; 用手划的十字

sign of the times 时代的徵兆; (有关某事的)最近的趋势

sign off 广播完毕 签字发誓戒绝, 废除; 断绝; 停止 在考勤簿上籤下班时间

sign on 签到 签订雇用或受僱契约 开始广播

sign on the dotted line 在虚线上籤字; [转]接受既成事实

sign over 签字移交

sign up [美口]签字应徵[参加]; 签约承担义务(for)

1.What does this sign mean?

这个标誌是什幺意思？

2.When shall we sign the contract?

我们什幺时候签契约？

3.Please sign here and here.

请在这儿和这儿签字。

4.A sign indicating the operation of addition.

表示加法运算的符号。

5.You have a sarcasm sign?

你有讽刺的牌子?