If you "win hands down," you're winning without a great effort.
如果你“垂著雙手取勝”（win hands down），說明你輕而易舉地贏得了勝利。

In horse racing, a jockey who's winning by a wide margin doesn't need to whip his horse to go faster, and can win with his "hands down. "The phrase soon caught on outside the sporting world.
在賽馬中，如果一名騎手覺得自己勝券在握，就不需快馬加鞭，而是可以“垂著雙手”就贏得勝利。這句習語迅速在體育圈之外流行了起來。