Am I laughing at the actors or with them ?

我是笑话那些演员还是和他们同笑的？

They played all afternoon , laughing at each other 's responses .

结果他们玩了一下午，各自嘲笑对方的反应。

We could hear the policemen laughing .

我们能听到警察们的笑声。

Also , when people are laughing at your jokes , you immediately gain social status which is attractive .

当人们因你的玩笑而发笑的时候，你的也会因此获得颇具吸引力的社会地位。

So , as a supporter of the efficient markets theory , I thought for sure the market would fall down laughing .

因此，作为一个自由市场理论的支持者，我确信市场将可笑的下跌。