Malfoy was on all fours, banging the ground with his fist.

马尔福四肢着地，两个拳头捶着地面。

You're gonna be on all fours in a rice paddy before the epidural wears off.

你将会面朝黄土背朝天在稻田里干到累垮为止。

You were going to be on all fours scrubbing a toilet.

你不得跪着趴着 擦厕所地板呀。

He was on all fours again on Snape's office floor, his scar was prickling unpleasantly, but the voice that had just issued from his mouth was triumphant.

他又扑倒在斯内普办公室的地上，伤疤针扎一般地痛，但从他嘴里发出的声音却是欢喜的。