1.[c][u]迹象；征兆；预兆an event, an action, a fact, etc. that shows that sth exists, is happening or may happen in the future
Headaches may be a sign of stress.头痛可能是紧张的迹象。
There is no sign of John anywhere.哪儿都没有约翰的影子。
Call the police at the first sign of trouble.一有闹事的苗头就叫警察。
There was no sign of life in the house(= there seemed to be nobody there) .那座房子没有一点住人的迹象。
Her work is showing some signs of improvement.她的工作出现了一些改进的迹象。
The gloomy weather shows no sign of improving.阴沉的天气没有丝毫转晴的迹象。
The fact that he didn't say ‘no’ immediately is a good sign .他没有马上拒绝，这是好征兆。
If an interview is too easy, it's a sure sign that you haven't got the job.如果面试太简单，那必定表示你没得到那份工作。
If I had noticed the warning signs , none of this would have happened.要是我当时注意到了那些危险苗头，这种事就一桩也不会发生。
2.[c]招牌；标牌；指示牌；标志a piece of paper, wood or metal that has writing or a picture on it that gives you information, instructions, a warning, etc.
a road/traffic sign道路╱交通标志
a shop/pub sign商店╱酒吧招牌
The sign on the wall said ‘Now wash your hands’.墙上的牌子上写着“请洗手”。
Follow the signs for the city centre.照标牌的指示到市中心。
3.[c]示意的动作（或声音）；手势a movement or sound that you make to tell sb sth
He gave a thumbs-up sign .他竖起了大拇指表示赞同。
She nodded as a sign for us to sit down.她点头示意我们坐下。
4.[c]符号；记号a mark used to represent sth, especially in mathematics
a plus/minus sign(+/–)加号；减号
a dollar/pound sign($/£)元╱英镑的符号
1.[i][t] 签（名）；署（名）；签字；签署to write your name on a document, letter, etc. to show that you have written it, that you agree with what it says, or that it is genuine
Sign here, please.请在这里签名。
Sign your name here, please.请在这里签名。
You haven't signed the letter.这封信您还没有署名。
to sign a cheque在支票上签字
The treaty was signed on 24 March.条约是 3 月 24 日签订的。
The player was signing autographs for a group of fans.这名队员正在为一群球迷签名。
He signed himself ‘Jimmy’.他署名“吉米”。
2.[t][i]和…签约（达成雇佣关系）to arrange for sb, for example a sports player or musician, to sign a contract agreeing to work for your company; to sign a contract agreeing to work for a company
United have just signed a new goalie.联队最近和一名新守门员签约。
He signed for United yesterday.昨天他和联队签了约。
The band signed with Virgin Records.乐队同维京唱片公司签了约。
3.[i][t]~ (to/for sb) (to do sth).~ that…示意；打手势to make a request or tell sb to do sth by using a sign, especially a hand movement
The hotel manager signed to the porter to pick up my case.旅馆经理示意行李员替我拿箱子。
4.[i][t]打手语to use sign language to communicate with sb
She learnt to sign to help her deaf child.为帮助她耳聋的孩子，她学会了手语。
An increasing number of plays are now being signed.现在越来越多的戏剧配上了手语。
Just sign on the dotted line and the car is yours.只要在虚线上签名，这车就归你了。
Just sign on the dotted line and the car is yours.只要在虚线上签名，这车就归你了。
Saying No is not a sign of weakness, it is an indication that you know your own strengths and are able to prioritise.
说“不”并不证明你无能，说“不”可以反映出你知道自己的能力何在而且懂得优先考虑。
I can sign a contract up to a year. I don't know where I'll be after that.
我能签最多长达一年的。我不知道一年后我会在哪里。
If you often hear others say the word "naive" , it's a dangerous sign that your imagination is about to leave you.
如果你对别人经常说“幼稚”两个字，这就是你的想象力即将离开你的危险信号。
I'll have my secretary type the contract for you to sign at once, then I'll drive you to the airport for your flight at.
我会让我的秘书立刻将合同打好给你签名，然后，我开车送您去机场搭七点钟的飞机。
Organizations and roles must be easy to administer and possibly rely on a Single Sign On infrastructure.
组织和角色必须要易于管理并可能依赖于单点登录设施。
I asked her: "Who, I get along with you so long, how that did not find such a sign. "
我问她：“那人是谁，我跟你相处这么久，怎么一点也没发现有这样的兆头。”
There was no sign of any projectiles landing on the island or in its surrounding waters.
目前没有迹象显示有炮弹落在延坪岛或其附近水域里。
Harry climbed over it and looked down through the trapdoor. There was no sign of the bottom.
哈利从大狗身上爬过去，透过那个洞口往下看。下面深不见底。
Together they confirm Wall Street's reputation as a lads' clubhouse with a "No Girls Allowed" sign emblazoned over the door.
这些案件共同印证了华尔街“男人俱乐部”的名声，俱乐部门上还挂着“女士免进”的牌子。
It is a sign that European countries may be moving closer to a deal to help Greece out of its immediate financial straits.
这是一个迹象，表明欧洲国家可能正在接近达成协议，帮助希腊走出其当前的财政困境。
The scheme is open to EU countries that do not use the euro: Poland and Sweden say they will sign up to it; Britain says it will not.
该计划也向不使用欧元的欧盟国家开放：波兰和瑞士表示他们将签订这项计划；英国则表示不参与。
Today, I asked my parents to sign for me to enlist in the military. They asked me how much money the government gives them if I die. FML.
今天，我拜托我父母帮我报名加入军队。结果他们问我的是如果我死了，政府能补贴多少钱。
But a sign came down from the world of grown-ups, though at the time there was no child awake to read it.
但是一个信号从成人世界飘扬而下，虽然当时孩子们都睡着了，谁也没有注意到。
How much did you sign up with that team for?
您与那个球队的签约金是多少？
And he said, "Well, get your homeroom teacher to sign a piece of paper that says you can come here, and I'll teach it to you. "
他说：“好的，让你的主管教师签一个单子，说明你可以来这里学，我就教你。”
Always ready to help others, Luo Lan runs up to tell her the direction in sign language.
一向乐于助人的罗兰连忙跑过去，用手语告诉女青年怎样去那个地方。
Note: Be aware that you might be required to sign up to receive an API key before using these services.
注意：要明白，在使用这些服务之前，您可能需要同意接收一个API键。
In a ball match, after struggling for several hours waiting, to see out his idol stormed in, he ask Robinson to sign an autograph.
在一次球赛后，苦苦等了几个小时的奥尼尔，看到偶像出来就信从冲冲地前去，请罗宾逊签名。
In adults, confusion or irrational speech or behavior is often the most obvious sign, Dr. Kleinman says.
克雷曼医生说，对于成年人，思维混乱、言语不清、行为怪异往往是最明显的中暑征兆。
Once you sign up for a free iCloud account, you're ready to start exploring the dozens of applications and widgets.
一旦你注册了一个免费的iCloud账户，你就准备开始探索许许多多的应用程序和小工具吧！
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