Draw the floss backwards and forwards between the teeth.将牙线在齿间来回拉动。He works backwards, building a house from the top downwards.他把工序倒过来了，从上往下建房子。The third wave was so strong it knocked me backwards.第3波浪太大了，把我打了回去。...
Every actor ought to know his lines backwards before he goes on stage,as nervousness may make him forgetful.所有演员在上台前都应当把台词记得滚瓜烂熟,因为一紧张就容易忘词。He just released his hold and toppled slowly backwards...他刚一松开手就缓缓向后倒下。A hedgeho...