欧洲的农夫将一个木钻子放入一个圆孔并用手掌不停旋转它。

European peasants would insert a wooden drill in a round hole and rotate it briskly between their palms.

youdao

欧洲的农夫将一个木钻子放入一个圆孔并用手掌不停旋转它。

European peasants would insert a wooden drill in a round hole and rotate it briskly between their palms.

youdao