bobbing

The small boat was bobbing on the sea.

船在海里上摆动。

I could see his ginger head bobbing about.

我可以看到他姜黄色的脑袋在上移动。

A little bird was bobbing its head up and down.

一只头上快速摆动着。

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

船在汹涌的湖面上摆动。

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。