They may also have used wood and skins, but these have rotted away.

他们也可能用过木头和兽皮，但这类东西早已腐烂殆尽。

so that it multiplied with that promiscuous abandon characteristic of rabbits.

因此便以兔子所特有的杂乱交配迅猛繁殖起来。

and because there is so much of it the function would seem to e important.

睡眠占去那么多时间，所以其作用似乎还是很重要。

He gets the solid shape, as it were, inside his head----

可以这样说，他脑子里得到的是一个立体的概念，

Parents would be greatly surprised and deeply touched if they realized how much belief their children usually have in their character and infallibility,

那么家长会大为吃惊和深受感动的，如果家长意识到孩子们通常是多么相信家长的品行和绝对正确，

The first essential in elephant training is to assign to the animal a single mahout who will be entirely responsible for the job.

驯象中至关重要的是指派一名专门的驯象员，全面负责这项工作。