slippery slope

剑桥词典

a bad situation or habit that, after it has started , is likely to get very much worse
滑坡效应（指坏情况或恶习一旦开始就很可能变得愈加严重）
You're on a slippery slope once you start lying about your age ! 你一旦开始对你的年龄撒谎，就再也停不住了！ 返回 slippery slope