The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.

我还以为我有一朵独一无二的花呢，我有的仅是一朵普通的花。这朵花，再加上三座只有我膝盖那么高的火山，而且其中一座还可能是永远熄灭了的，这一切不会使我成为一个了不起的王子。

The poet is a man who manages to be, in his own lifetime, what all men would like to be after their death.

我们以可持续方式养殖的每一条鱼，都是迈向更健康地球的一步。