but they lead mysterious lives of their own as well.

但是，它们又有自己神秘的生活方式。

It was rather like an exhibition of prehistoric electronic equipment.

这儿倒像是在展览古老的电子设备。

To our dismay, we saw that there were snails everywhere:

让人沮丧的是，我们发现到处都是蜗牛：

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。

What a relief it was when the boulders suddenly disappeared, giving way to a stretch of plain where the only obstacles were clumps of bushes.

突然大石块不见了，前面是一片平地，唯一的障碍只有一簇簇灌木丛。这使我们长长地松了口气。

But people who are cut off not only from foreign tourists, but even from their own countrymen can be hostile to travellers.

但是，那些不但与外国旅游者隔绝，而且与本国同胞隔绝的人们有可能对游客抱有敌意。