Known quantity

known [nəun]

adj. 大家知道的;已知的;知名的;向某人作自我介绍; v. 知道( know的过去分词 );看到过;听到过;经历过;

quantity ['kwɑntəti]

n. 量，数量;定量，大批;数目;[语音学、韵律学]音量（指元音或音节的长短）;

quant 多少，数量+ ity 表名词 → n.量，数量，分量

who used to run the drugstore in town.

他过去在镇上经营药房。

Whom will you go out with?

你将和谁出去？

Do you remember one afternoon ten years ago when I came to your house and borrowed a necklace of yours? Pierre, my husband, was working in a government office. We'd been invited to a ball at the palace so I needed to borrow some jewellery.

10年前的一个下午，我到你家借过一条项链，你还记得吗？我的丈夫比尔当时在政府的一个部门工作。我们被邀请参加一个宫庭舞会，所以我需要借一点珠宝首饰。