Each person at a party shook hands exactly once with each of the other people at the party.There was a total of 21 handshakes exchanged at the party.What is the number of people at the party?

英译汉 governments should let each person have at least 20 litres of clean water a day. In each person eye has a most beautiful person.” Each person 什么 (be)happy at the Spring Festival Each person at a party shook hands exactly once with each of the other people at the party.There was a total of 21 handshakes exchanged at the party.What is the number of people at the party? Like a person at home a single person 和a person有什么区别i didn't know a single person there I didn't know a person there a single person和each person ,each individual 有什么区别? Like a person at home Chat par. A person,be good to yourself; Two person,treat each other. Falling in love with a person is painful,each other should believe each other 怎么翻译? my ano ther par a each person 还是each people,为什么? 英语翻译The Company is authorised to issue a maximum of 50000 no par value Shares of a single class each with a par value of us$1.00.特别是这个 a single class 表示啥意思,好像 no par value Shares 多余了? match each person in 2a with an ad in 2match each person in 2a with an ad in 2b. A person,www.madouzi.com be good to yourself; Two person,treat each other.一个人时后面帮忙翻译下 at each 原句是：but i saved money and made a plan at each gap She knocked at the door one by one to make sure that each person ＿＿＿ about the fire.A.to be telling B.was told C.told D.tell 英语翻译a release provides k-anonymity protection if the information for each person contained in the release cannot be distinguished from at least k – 1 individuals whose information also appears in the release