When a fish bites the hook, the float bobs.

当鱼上钩时, 鱼漂上下跳动。

A little bird was bobbing its head up and down.

一只小鸟把头上下摆动着。

The small boat was bobbing on the sea.

小船在海里上下摆动。

The small boat was bobbing on the rough water of the lake.

小船在汹涌湖面上下摆动。

I could see his ginger head bobbing about.

我可以看到他姜黄色脑袋在上下移动。

It's the late 1940S,people flew in an aerocar,a car that could turn into an airplane, on TV's "love that bob" show.

在1940年代晚期，，车可以转变成飞机，在电视。