“左耳朵进，右耳朵出”英语怎么说？

go in one ear and out the other

If you say that something you hear goes in one ear and out the other, you mean you quickly forget it.

左耳朵进右耳朵出;当作耳边风

If I have to listen to something I don't understand, it just goes in one ear and out the other.

要是非得让我听我不懂的事情，那也只是左耳朵进右耳朵出。

The teacher keeps telling the pupils to work harder but her words go in one ear and out the other.

老师一再告诫学生们更努力地学习，可她的话被当成了耳旁风。