That's an old joke - I've heard it about a thousand times.

那是个老笑话——我已经听过一千遍了。

One astronomer looked at pictures of Miranda and remembered an old joke.

一位天文学家看着天王星的照片想起了一句过去开过的玩笑.

There was an old joke about how if you ask a consultant the time he’ll borrow your watch so he can tell you.

有一个古老的笑话说，如果你问顾问现在几点，他会先向你借手表，然后才好告诉你。

The old joke that the way to render an Italian speechless is to tie his hands together has a kernel of truth in it.

有一个老笑话说，如果要让一个意大利人闭嘴，那就把他的手绑起来，这个笑话有其道理所在。

There's an old joke, statisticians like to tell which is that your vocabulary size is correlated with your hand size. And it's actually true.

有个古老的笑话，统计学家喜欢讲，一个人的词汇量与手掌的大小相关。这是真的。

To echo an old joke, heaven is where women and older people work like the Swedes, the young work like the Dutch and the unemployed find jobs like the Danes.

重复一个古老的笑话，天堂里住着的妇女和老人，象瑞典人一样辛勤、年轻人象瑞士人一样工作、而失业者则以丹麦方式重返职场。