She lay face down on the bed.

她俯卧在床上。

《牛津词典》

Betty hunkered down on the floor.

贝蒂蹲坐在地板上。

《柯林斯英汉双解大词典》

You need to cut down on starches.

你有必要少吃些含淀粉的东西。

《牛津词典》

One story says it got that meaning from the custom of throwing boiling water down on enemies attacking a castle.

VOA: special.2009.05.10

So the force that you're pushing down on here is the external pressure times the area.

或者压缩功的概念,在活塞上施加压力。

麻省理工公开课 - 热力学与动力学课程节选

and that's kind of like, I'm dressed down on it, I love to shop there.

那里就像是，我就是那种风格的打扮，我喜欢去那里买东西。

享受周五夜晚 - SpeakingMax英语口语达人

Horsup jumped up and down on top of the soil, hoping to stir the creature below.

BBC: Protecting a wombat species that is as fast as Usain Bolt

Pierre pointed out that threats about cracking down on cannabis tourism are nothing new.

BBC: Marijuana tourism ban in Amsterdam?

He laid the bikes down on the curb and worked his way back—quietly—to take a closer look.

NPR: Excerpt: 'Killer Weekend'