We should try to buy more time.

　　我们要设法拖延时间。

　　buy more time 字面意思是：“买更多的时间”，这个短语的正确意思是：“争取时间、拖延时间”。因此，当美国人说"We should try to buy more time."时，他/她要表达的意思就是:"We should try to gain more time."、"We should try to stall for time."、"We'd better adopt a stonewalling strategy."。

　　情景对话：

　　Jane: What's the matter with Mike? He is about to make presentation in ten minutes, but where is he?

　　简：麦克怎么回事啊，十分钟后就该他发言了，他哪儿去了啊？

　　Shirley: Call him immediately. And anyway, we should try to buy more time.

　　雪莉：快打电话给他，无论如何我们要设法拖延时间。

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