pile up

To accumulate.

积累，积聚

&I{Informal} To undergo a serious vehicular collision.

【非正式用语】 撞车：经历一次严重交通工具相撞

make a (或 one's) pile

(informal)make a lot of money

(非正式)赚钱，发财

pile arms

place a number of rifles (usually four) with their butts on the ground and the muzzles together

架枪

pile it on

(informal)exaggerate the seriousness of a situation or of someone's behaviour to increase guilt or distress

(非正式)夸大，夸张

pile on the agony

(in formal)exaggerate or aggravate a bad situation

(非正式)过分渲染（困境）