Drop a dime

    打个电话

    Drop a dime字面解释是“投个硬币”，这是什么意思呢？请看对话：

    A: Long time no see. Are you back in town on business?

    B: It's rather personal. My cousin is getting married and he has asked me to be his bestman. Sorry, but I have an appointment at 6 and must go now. Nice catching up with you.

    A: Good to see you too. Don't be such a stranger. Drop a dime some time.

    B: Sure, talk to you later.

    Note: The dime is a 10-cent coin, one 10th of a U.S. dollar. Pay phones cost 35, 50, or even 75 cents nowadays, but they really did cost 10 cents at one time. The dime is dropped into the slot of the pay phone and you can make a call. Therefore, to "drop a dime" simply means to "make a phone call."