Come down down from the sky.

快从天上飞下来。

youdao

In 'come back', 'break down' and 'fall off', 'back', 'down' and 'off' are all adverbial particles.

在come back、break down和fall off中，back、down和off都是副词小词。

《牛津词典》

It seems like whenever I get into a really good running groove, I come down with a cold that forces me to slow down my training.

似乎每当我进入一个非常好的跑步状态时，我就会因为感冒而不得不放慢速度。

youdao

And I tend to sit down and improvise. Within those improvisations certain motives and ideas will come about that I like."

VOA: special.2010.07.19

And it's always going to come down to calculating the appropriate free energy, and how it changes in the process.

这总是涉及到计算,适当的自由能，以及这些自由能在过程中如何变化。

麻省理工公开课 - 热力学与动力学课程节选

And I used to live here, so I now come down to see some friends and

我以前住在伦敦，所以现在我来拜访朋友，

有很多旅行者 - SpeakingMax英语口语达人

It also has come down overall in the last months when -- as the overall rate has come down.

WHITEHOUSE: Press Briefing

But crime levels have come down and they've come down very considerably.

BBC: Jack Straw MP. photo courtesy Jeff Overs

Avoid sugary drinks, candy or any other glucose boosters: After all, what goes up must come down, and you'll come down even harder if you're already overtired.

FORBES: How To Run On Fumes