Sales are well up on last year.

销量比去年大幅增加。

He's well up in all the latest developments.

他对所有的最新发展情况都了如指掌。

He clambered into his bunk and rolled himself well up in the blankets, as a swathe of barley is folded into the arms of the reaping machine.

河鼠爬进他的床铺，用毯子把自己紧紧裹住，就像一行大麦落进了收割机的怀抱一样。

Anger well up within him.

怒火涌上他的心头。

I saw her eyes well up with tears.

我看见她热泪盈眶。