“hollow”的本义是“空的，无用的”，beat someone hollow的意思是“彻底打败”。

【例句】
Three fast runners entered the race, but Jim beat them all hollow.
三名短跑运动员参加比赛，而吉姆把他们统统击败。

The basketball game was over, and the other team beat our team hollow.
篮球赛结束了，对方彻底击败了我们球队。