As no pumas had been reported missing from any zoo in the country, this one must have been in the possession of a private collector and somehow managed to escape.

由于全国动物园没有一家报告丢了美洲狮，因此那只美洲狮一定是某位私人收藏豢养的，不知怎么设法逃出来了。

Both planes were going to take off on July 25th, but Latham failed to get up early enough,

两天飞机都打算在7月25日起飞，但莱瑟姆那天起床晚了。

The man went to great lengths to prove that the diamonds were real.

那人竭力想证明那钻石是真货。

Many people find this sort of joke distasteful The following example of 'sick humour' will enable you to judge for yourself.

许多人认为这种笑话是低级庸俗的。下面是个“病态幽默”的实例，你可据此自己作出判断。

Suddenly they came to a waterfall which dropped into an underground lake at the bottom of the cave.

突然，他们来到一道瀑布前，那瀑布奔泻而下，注入洞底一处地下湖里。

Rubbish, however, is only part of the problem of polluting our planet.

然而，垃圾只是我们这个星球的污染问题的一个方面。