(1) 职(行)业(one's work or occupation; profession)[U，C]：What～are you in/What sort of～do you do? 你是干哪一行的? His～is poultry farming.他是干家禽养殖的。He went into the detective～.他干上了侦探工作。the hotel～旅馆业;Don't let your～interfere with your home life.不要让工作妨碍家庭生活。a～suit职业服;〖同〗job，profession，occupation，career;

(2) 买卖，生意(buying and selling (esp as a profession))[U]：How is～these days? B～is good/booming.这些日子生意好吗? 生意很好/兴隆。do～with a person/a company/a country和一个人/公司/国家做生意;go into/go out of/go bankrupt in～从商/经商破产/经商破产;set up in～as a... 成了……商人;be in oil/wood～做石油/木材生意;Are you here for～or pleasure? 你来此地是做生意还是来玩的? The shop does a lot of～at Christmas.这家商店圣诞节时买卖兴隆。B～is bad this year.今年生意惨淡。～trips/appointments/lunches/sense/schools商业旅行/约会/午餐/意识/学校;～men/cards/hours/addresses/interests商人/名片/营业时间/营业地址/企业股份;〖同〗commerce，trade;

(3) 商店(号，行)(commercial firm， company， shop)[C]：own/have/run/sell one's own～拥有/有/经营/卖掉自己的商店;small/grocery/ green-grocer's～小/杂货/果菜店;a travel～旅行社;〖同〗firm，store，shop;

(4) 责任，任务(duty; task; concern)[U]：My/A writer's/An author's～is to tell the truth.我/一个作家/一个作者的责任是讲真话。My～is making sure everyone works well.我的责任是确保人人工作得好。It is none of your～/no～of yours.这不关你的事。That's his～and no one else's.这是他的事情，不关任何别人的事。 Mind your own～.别管闲事。make it one's～to do sth负责做某事;〖同〗concern，task，responsibility，duty;

(5) 要处理(讨论)的事(thing that needs to be dealt with; matters to be discussed)[U]：the main～of/before the meeting会上要讨论/会前要做的主要事情; Let's get down to the～at hand.咱们开始干手头的正事吧! 〖同〗concern;

(6) 事(情，务)(matter; affair; thing)[U，a～]：It is a strange/funny/difficult/disturb-ing～.这是一件奇怪/有趣/困难/让人心乱的事情。an odd/awful～古怪/可怕的事情;I'm tired/sick of the whole～.对这件事我整个都很厌烦了。This～is making me ill.这事把我搞病了。What a～it is changing a tyre! 换轮胎真是件烦人的事! go about the～at hand着手处理手头的事情;〖同〗matter，affair，thing;

on business 因公，因事：Are you travelling on～or for pleasure? 你是因公出差，还是旅游? No one is admitted except on～.非公莫入。

in business 营业：He is no longer in～.他已不再经商了(他的商店停业了)。

have no business to do/doing sth 无权做某事：You have no～to be here at this hour instead of at school/to publish his letters/saying such things about him.你无权这会儿在这儿而不去上学/公开他的信/这么说他。