不要拿干净的手碰其他人用不干净的手触摸过的地方，这是不卫生的。

It is not sanitary to touch areas with clean hands that others have touched with dirty hands.

youdao

不要拿干净的手碰其他人用不干净的手触摸过的地方，这是不卫生的。

It is not sanitary to touch areas with clean hands that others have touched with dirty hands.

youdao