Just as he gets there, the effort becomes too much, the boulder escapes, rolls all the way down the hill, he has to trudge back down to push it up again, and the same thing happens again and again for all eternity.
每当他快要到达山顶，他就体力不支， 石头就又滚下山去， 于是他就得重头再来一次， 不断地重复这件事 永无休止地做这件事。