How did you alight on(upon)these ancient books?

你怎么发现这些古书的?。

Please alight on the left/right and mind the platform gap.

请在屏蔽门完全打开后从左侧/右侧车门下车，开门请当心，注意脚下安全。

How did you alight on ( upon ) these ancient books?

你怎么发现这些古书的?

The next station is Mei Foo, please alight on the left.

下一站系美孚，请用左边车门落车。

This is still okie, but the problem is we alight on the same bus stop…

这还没关系，问题就是我们还在同一个车站下车…

They’ll alight on a topic, use it in a particular way and then they’re on to something else.

他们落到某一话题上，将这一话题用在某些特殊的地方之后便将注意力转到了别处。