1. U 汗，汗水　liquid which comes out from the body through the skin to cool it
2. S 苦差事，艰苦的工作　task, etc. needing much effort; hard work

　exude〔wipe〕 ～　出〔擦〕汗
　take the ～　做吃力的工作
　cold ～　冷汗
　terrible ～　焦躁不安
　awful ～　极苦的活
　night ～　盗汗
　by〔in〕 the ～ of one's brow　靠自己的辛苦劳动
　all in a ～　全身是汗
　throw sb into ～　使某人发汗
　be running with ～　汗水直淌

　He wiped the sweat from his face.　他抹去脸上的汗。
　The job's quite a sweat; I'm exhausted already.　这个工作相当吃力，我已经精疲力竭了。

 ♣ all of a sweat
1. 一身大汗wet with sweat
　She was all of a sweat.　她一身大汗。
2. 焦急的，害怕的anxious or frightened
　She is always all of a sweat before the exam.　她临考前总是急得不得了。
 ♣ no sweat
　不费力的〔地〕；轻易的〔地〕，没什么　(used for saying sth will not cause any difficulty)
　"Could you manage it?""No sweat!"　“你能对付吗?”“毫无问题！”

1. vt. & vi.出汗　 give out sweat
2. vt. & vi.（使）辛苦工作　 work hard

　～ horse　使马出汗
　～ moisture　使水分渗出
　～ patient　使病人出汗
　～ worker　使工人拼命工作
　～ abnormally　一反常态地辛苦工作
　～ mercilessly〔ruthlessly〕　残酷地榨取
　～ profusely　大汗淋漓
　～ tremendously　非常辛苦地工作
　～ off　由于出汗而减轻
　～ out　以出汗来驱逐
　～ by　因…而使…大汗淋漓
　～ for　付出巨大的努力而得到…，因…而后悔
　～ out of　从…身上榨取
　～ with　因…而出汗

　He sweated during the night.　他晚上盗汗。
　The long hot climb made him sweat.　长距离的激烈攀登使他出汗了。
　He was sweating after working so hard.　他拼命干活后正在出汗。
　He was sweating like a bullock.　他正在牛马似地干活。
　The doctor sweated his patient.　医生使他的病人发汗。
　He sweated his horse by riding it too hard.　他拼命骑马，使马累出一身汗。
　You should try to sweat the surplus moisture.　你应该设法使多余的水分渗出。
　The boss sweated his workers.　老板让他的工人们辛辛苦苦地工作。

 ♣ sweat for　(v.+prep.)
　〈非正〉付出巨大的努力而得到…　 gain (sth) by great effort
　〔说明〕 sweat for常不用于进行体。
　The other team won the prize, but we made them sweat for it!　那个队得奖了，可我们也让他们赢得不轻松。
 ♣ sweat off　(v.+adv.)
　由于出汗而减轻　close (weight) by losing liquid from the body
　In the steam bath, he sweated off two pounds in an hour.　他洗蒸汽浴时出了一身大汗，体重在一小时内就减轻了两磅。
 ♣ sweat out　(v.+adv.)
1. 以发汗来驱逐 remove or get rid of (sth) by getting hot and losing liquid from the body
　She sweated out her cold.　她发了一身汗治好了伤风。
　When you feel flu coming on, get into bed and sweat it out.　当你开始觉得有点感冒时，赶快上床去，出身汗就好了。
2. 拼命工作 work very hard indeed
　Why should I sweat my guts out for only twelve pounds a week?　一周只给12镑，我为何要拼命干呢?
　Here I've been sweating my guts out all afternoon, and hardly anything to show for it!　我在这儿玩命干了一下午，可几乎不见成效。
3. 忍耐到最后 wait for the end or arrival of sth in discomfort; suffer sth unpleasant till it ends
　Don't throw up your job, sweat it out a bit longer.　不要轻易放弃你的工作，再忍受一阵子。
　It was a terrible performance, but I felt I had to sweat it out.　节目太差了，可我还得耐着性子看下去。

　［派生词］ sweaty adj.浑身出汗的，汗臭的；闷热的；热得使人出汗的‖sweatily adv.浑身出汗地；热得使人出汗地‖ sweatiness n.浑身出汗；闷热
　［词源］古英语swœtan（汗，出汗）