The further off this solid obstruction, the longer time will elapse for the return of the echo.

固体障碍物越远。回声返回所用时间就越长。

Beyond two or three days, the world's best weather forecasts are speculative,

世界上最好的两三天以上的天气预报具有很强的猜测性，

This result merely confirms earlier American and British studies:

结果仅仅确认了美国人和英国人早期的研究：

But even in the most favourable circumstances only a small fraction of the creatures that die are preserved in this way before decay sets in or, even more likely, before scavengers eat them.

即使是在最有利的环境中，死去的生物中也只有一小部分能在开始腐烂前，或更可能在被食腐动物吃掉之前，被这样保存下来。

There is none of the hurry which, in our society,

那里没有我们今天社会中的匆忙生活，

that the talent goes into the first draft, and the art into the drafts that follow.

他说，初稿是才华，以后各稿是艺术。