Bill tends to scratch his head while thinking.

比尔在思考时常常会抓头。

youdao

If he scratches his head, you scratch your head.

如果他挠头，你也挠头。

youdao

If he scratches his head, you scratch your head.

如果他搔搔头，你从头开始你的头。

youdao

If he scratches his head, you scratch your head.

如果他搔搔头，你从头开始你的头。

youdao