I do not know whether you realize it, but this condition is essential to us.
我不知道你是否了解,但是,这个条件对我们是必要的。
It is a harmless bait, but it litters up her desk to such an extent that every time she opens it, loose bits of paper fall out in every direction.
这种习惯无害,只把写字台里堆得满满当当,以致每次打开抽屉总能带出许多纸片四处飞扬。