Oho! ' said Fudge, bouncing up and down on the balls of his feet again.

啊哈！”福吉说着又在踮着脚蹦蹦跳跳.

" He's really excited! " said Colin, practically bouncing up and down in his seat.

“他兴奋得要命！”科林说着，居然在椅子上蹦跳了一下。

When Kelly heard the news, she was so excited that she bounced up and down on the sofa.

凯莉听到这个消息时，兴奋地在沙发上跳上跳下。

" Don't be so sure it'll stay that way, " she snaps, her pregnant belly bouncing up and down.

“还不知道能维持多久呢。”她愤愤地说，大肚皮上下颤动。

For a long while conversation was impossible, because I was bouncing up and down on the seat like a jackhammer.

有很长一段时间我们根本没办法谈话，因为我一直像只手提钻一样在座位上弹上弹下。

Stop bouncing up and down on the sofa.

【bounce】别在沙发上跳上跳下的了。

The spring bounces up and down in waves.

弹簧呈波浪状上下弹跳。

' She began bouncing up and down in the chair.

’她开始在椅子上蹦来跳去。

When you think of a basketball, for example, you imagine it bouncing up and down.

例如，当您想到篮球时，您会想象它上下弹跳。

If you bounce up and down over and over, you hop.

• 如果你一遍又一遍地上下弹跳，你就跳了。

Earl of Wemyss: And you did that. You'd bounce up and down.

Earl of Wemyss：而你做到了。 你会上下弹跳。

Donald made a bridle of his handkerchief and bounced up and down on the tiger's head.

唐纳德用手帕做了一个缰绳，在老虎头上蹦来跳去。

A girl was bouncing up and down two seats along from us, her voice hoarse with screeching.

一个女孩在我们旁边两个座位上蹦蹦跳跳，她的声音因尖叫而沙哑。

Alex." She's on her knees on the bed now, bouncing up and down." Alex, this is genius.

她现在跪在床上， 上下弹跳。 “亚历克斯， 这真是天才。

Think of it a bit like a dog's version of tapping your foot or bouncing up and down when you're stressed or bored.

可以把它想象成，当你压力很大或者是很无聊的时候，狗狗碰碰你的脚或者是跳上跳下。

But they only considered vertical oscillations -- the kind that would have made the bridge bounce up and down.

但他们只研究了垂直振荡， 它可能会使桥上下弹跳。

" Oh, I wish could enjoy a cup of tea without a naked girl bouncing up and down on me." I never said that.

人家真希望可以安静喝完一杯茶而没有裸女在我身上跳来跳去" ，我从未说过这话。

Narrator: The illusion wouldn't work unless the bus kept moving, which is why you can see it bouncing up and down off the ground.

旁白：除非公共汽车继续移动，否则幻觉不会起作用，这就是为什么你可以看到它在地面上上下弹跳。

And that motion is mathematically identical to the motion of something bouncing up and down on a spring with a linear restoring force - also sine waves over time.

这种运动在数学上和一个物体在弹簧上以线性恢复力（随时间变化的正弦波）上下弹跳的运动是一样的。

Harry looked around; all three of the Dursleys were cowering with their arms over their heads as their glasses bounced up and down on their skulls, their contents flying everywhere.

哈利扭头一看，德思礼家的三个人都用胳膊护着脑袋，因为他们的杯子正跳上跳下地撞着他们的脑壳，里面的酒洒得到处都是。