call on/upon (to do sth)1.恳求、请求(某人)(做某事)：We called on him to make a loan to us so that our company might not close down.我们恳求他贷款给我们，以免我们公司倒闭。2.邀请(某人)(做某事)：This big enterprise called on many well-known people to attend its inauguration so as to add to its prestige.这个大企业邀请许多知名人士参加它的开幕典礼以增加它的声望。 |