Peeves was bobbing halfway up, loosening the carpet so that people would trip.

只见皮皮鬼正蹦蹦跳跳地往楼上走，一边把楼梯上铺的地毯扯松，想害得别人摔倒。

The wind from the window makes the lips bob up and down.

窗外的风吹来，嘴唇上下颤动。

He would sit on my shoulder and bob his head up and down.

他会坐在我的肩膀上， 上下摇头。

Eventually, the head bobs up again – but then it goes right back into the water.

终于，他再次抬起头， 但它会立即返回并沉浸其中。

Teeth plaCement, jaw stress, suCtiOn, and gag reflex, all the while bObbing up and dOwn, mOaning and trying tO breathe. Easy?

牙齿要放对位，下颚紧绷 吸吮和快室息的感觉，在上上下下之际 还要一边呻吟呼吸，简单吗？

But for the last few minutes you've also been watching a different type of connective tissue bob up and down as I talk — cartilage.

但在刚才的几分钟里你们也看到了另一种结缔组织，它在我讲话时上下跳动，那就是软骨。

And you can also see it in other people as well, as their heads begin sort of bobbing up and down during afternoon meetings.

你也可以在其他人身上看到它，因为他们的头在下午的会议上开始上下摆动。

At two o'clock in the afternoon Alexandra's cart drove up to the Shabatas' gate, and Marie saw Mrs. Lee's red shawl come bobbing up the path.

下午两点钟，亚历山德拉的马车开到沙巴塔家门口，玛丽看到李太太的红围巾在小路上晃来晃去。

Will tried to focus on the worksheet, but soon his eyes were closed and his head was bobbing up and down with every bump in the road.

威尔试图把注意力集中在工作表上，但很快他的眼睛就闭上了，他的头随着路上的每一个颠簸而上下摆动。

Trying to answer a question with Hermione next to him, bobbing up and down on the balls of her feet with her hand in the air, was very off-putting, but Harry had a go.

赫敏坐在哈利旁边，踮着脚跳上跳下。她的手又举了起来，在这种情况下，要回答问题是使人困窘的，不过哈利不能不回答。

" That is no reason why I should let you either. Call Jane to help or I'll bob up again directly, " answered Rose, with a very bad assumption of authority.

“这也不是我应该让你的理由。打电话给简帮忙， 否则我会直接再跳起来， ” 罗斯回答说， 带着一种非常糟糕的权威。

They can clamp their thighs tight and try to remain seated, or they can bob up and down with the rhythm of the horse, standing in the stirrups as they rise off the saddle.

他们会夹紧大腿并保持坐姿，或者随着马跑动节奏上下起伏，臀部离开马鞍时脚踩马镫站立。

The disentanglement was not even faintly in sight and the day had passed in an atmosphere of unfamiliar Negro faces bobbing up in unexpected places and around unexpected corners, and insistent Negro voices on the phone.

解脱甚至看不到一丝一毫，一天过去了，陌生的黑人面孔出现在意想不到的地方和意想不到的角落，电话里不断传来黑人的声音。

The greatest of thinkers, from Aristotle downwards, have tackled this little problem, which has a knack of baffling every effort, of slipping away and escaping only to bob up again, a pert challenge flung at philosophic speculation.

从亚里士多德开始， 最伟大的思想家都解决了这个小问题，它有一个诀窍， 那就是费尽心机，溜走和逃脱， 然后又跳起来，这是对哲学思辨的重大挑战。