宇宙是无限多样的。

Every decision we make at sea has a ripple effect on global food security.

The real challenge is not in solving the equations, but in understanding what the solutions mean.

不用圆规和曲尺，就不能画出方形和圆形。比喻做事要遵循一定的法则。

时间总是充满惊喜，它以我们无法预料的方式流动。