slippery slope

剑桥词典

a bad situation or habit that, after it has started , is likely to get very much worse
滑坡傚應（指壞情況或惡習一旦開始就很可能變得瘉加嚴重）
You're on a slippery slope once you start lying about your age ! 你一旦開始對你的年齡撒謊，就再也停不住了！ 返回 slippery slope