Hopes that the French would make a clean sweep at the Games were dashed.

【clean，cleanness】法国在运动会上大获全胜的希望破灭了。

It's common sense that African athletes always make a clean sweep in track events: middle or long distance races. relays, hurdles, barriers, and marathon.

众所周知，非洲运动员在径赛中的表现尤其抢眼。不管中长跑、接力、跨栏、障碍跑，还是马拉松，他们都大获全胜。

Determined to have none but his friends in office, he made a clean sweep, expelling old employees to make room for men " fresh from the people." This was a new custom.

他决心只有他的朋友才能上任， 于是一网打尽，开除老员工， 为“新人” 腾出位置。 这是一种新习俗。