bobbing

I could see his ginger head bobbing about.

我可以看到他黄色的脑袋在上下移动。

The small boat was bobbing on the sea.

在海里上下摆动。

A little bird was bobbing its head up and down.

一只鸟把头上下速摆动。

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

在汹涌的湖面上下摆动。

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，，车子可以转变成飞机，在电视的。