他们想飞上天空，在那里开个玩笑。

They thought they would fly up to the sky, and have a joke there.

youdao

他们飞上飞下，还绕着圈子飞。

Up and down they went, and round and round.

youdao

很快，他的风筝飞上了天空。

Soon, his kite was high up in the sky.

youdao

If you escape the pull of gravity, your spaceship will be off, won't be orbiting the Earth.

如果你完全脱离重力,太空船早就飞得没影了,而不是在轨道上运行

耶鲁公开课 - 基础物理课程节选

because they fly in to land on our medical center, a few times a day usually.

因为它们飞进来在我们的医学中心上降落，一天通常会有好几次。

学习机械工程 - SpeakingMax英语口语达人

I mean, you know the wings go, and the air runs, and then the motor on the engine and it's a miracle how it gets up there and that is the way I used to explain the Greeks, because I had no better idea.

我的意思是,你知道机翼的作用,空气的流动,还有引擎上的发动机,飞机能飞起来,是个奇迹,我就是用这种方式来解释希腊历史的,因为我也没有更好的方法了

耶鲁公开课 - 古希腊历史简介课程节选