They spin around, they move up and down.

它们会原地转圈 上蹿下跳。

And watching them literally moving up and down.

就看着他们在上蹿下跳 非常兴奋。

That is the little thing that moves up and down.

就是有个小东西会上下动来动去的。

The heads, which are on springs, move up and down.

头部在弹簧上上下移动。

Paul's eyebrows moved up and down as his teachers spoke.

当大家发言的时候保罗的眉梢不时跳上跳下。

The tip of his nose, almost unnoticeably, moves up and down.

他的鼻子几乎难以觉察地上下动了一动。

If something flaps, it moves up and down or side to side very fast.

如果某物拍打翅膀，它会快速地上下或左右移动。

Jerry was moved up and down in his seat, and from one side to the other.

杰里在座位上蹦蹦跳跳，左右摇晃。

His face turned a light green color. The muscles in his legs moved up and down.

他的脸变成了浅绿色，腿上的肌肉上下窜动。

Bobbleheads are small figures with abnormally large heads. The heads, which are on springs, move up and down.

摇头玩偶是一种头部异常大的人偶。它们的头部安装在弹簧上，可上下摆动。

If you just sit in your house all day, you move up and down by about that much...twice!

如果你整天坐在家里，你其实也会上下移动那么多… … 而且每天有两次！

They can move up and down these mountains and valleys to chase their ideal climate conditions.

它们可以游走在这些山脉和山谷之间来寻找适合它们的理想的气候环境。

The research team took their inspiration from the natural world, watching house spiders move up and down their webs.

研究小组是从自然世界中汲取的灵感，他们观察到蜘蛛在网上上下移动。

You don't move up and down.

你不会上下移动。

You can see the line moving up and down on the image.

您可以看到这条线在图像上上下移动。

Your car moves up and down because the road isn't even.

你的车上下移动，因为道路不平坦。

A light switch can move up and down.

电灯开关可以上下移动。

The amplitude, or the depth the massage ball would move up and down.

按摩球上下移动的幅度或深度。

The lips on the masks moved up and down.

面具上的嘴唇上下动动。

See how his wings move up and down just a tiny bit each rectangle?

看到他的翅膀是如何在每个矩形上下移动一点点的吗？