Airplanes retract their landing gear while in flight for the same reason.

出于同样的原因，飞机在飞行时收回起落架。

Some people are seated on the plane’s landing gear flap.

有些人坐在飞机的起落架襟翼上。

He had one last hope to cling on to.

他还抱着最后的一线希望。

He managed to cling on to a ledge 40 feet down the rock face.

他设法抓住了岩面下方40英尺处的岩脊。

She's made a miraculous recovery.

她奇迹般地康复了。

It was really miraculous.

这真是个奇迹。

Some people might be obsessed with their fantasy and refuse to wake up.

有些人沉迷于幻想不愿醒来。

He became obsessed with video games.

所以他对游戏很着迷。

How dared you to play truant!

你竟敢逃学。

We are not allowed to play truant.

我们不被允许逃学。

He is a rebellious teenager.

他是个叛逆的青少年。

He has always had a rebellious streak .

他总是有点倔强。

One out of four kids will be bullied during their adolescence.

四分之一的孩子在青春期会遭到霸凌。

No one wants to go through adolescence again.

没人想再一次经历青春期。

The violent vibration and the huge roar of the engine made the two teenagers realize how scary it was.

引擎猛烈的震动和巨大的轰鸣声使两个青少年意识到这是多么可怕。