A：Here. Take these pills (three times/ twice/ ten times) every (day/ an hour/ thirty minutes).
      这个，这种药每（天/小时/半小时）服用（3次/两次/10次）。

B：Does my insurance cover them?
      是由保险金支付吗？

A：Well, you finally got here.
      啊，你总算来了。

B：It's about time. I've been waiting in this restaurant a full thirty minutes.
      你迟到了。我在这家饭店足足等了三十分钟。

A：Sorry, Jeannie. You know me. I'm always late.
      对不起，珍妮。你是知道我的，我总是迟到。

B：Everybody knows, and every body's getting tired of it.
      人人都知道，人人都对此感到讨厌。

A：All I can say is sorry. Maybe I'll reform, but don't count on it.
      我所能说的只有抱歉。也许我会改正，不过别对我抱太大希望。

thirty

C：May I help you?
      可以为您效劳吗？

A：Could I have a look at those pens?
      给我看看那些钢笔好吗？

C：Certainly. These are thirty yuan each and these are twenty-five.
      当然可以。这种是三十元钱一支，这种二十五元钱。

A：Have you got anything a bit cheaper?
      有稍微便宜一点的吗?

C：How about these? They are nine yuan each.
      这种行吗？九元钱一支。

A：(after looking them over) No, they’re not quite what I want. Sorry to trouble you.
      （看后）不买了，不是我想要的那种笔。对不起，麻烦您了。

C：Not at all.
      不客气。

1. (数字) 30
    Thirty is the number 30.

2. 三十多，三十几(指 30 至 39 之间的数字)
    When you talk about the thirties, you are referring to numbers between 30 and 39. For example, if you are in your thirties, you are aged between 30 and 39. If the temperature is in the thirties, the temperature is between 30 and 39 degrees.

    e.g. Mozart clearly enjoyed good health throughout his twenties and early thirties.
           显然，莫扎特在二十几岁到三十刚出头时，身体非常好。

3. 三十年代(指 1930 年至 1939 年)
    The thirties is the decade between 1930 and 1939.

    e.g. She became quite a notable director in the thirties and forties.
           她在三四十年代成了一位名导演。