He tried to keep his intentions well hidden, but it doesn't take too long for people to tumble to him.他企图隐瞒他的意图，但没有多久人们就看穿了他。Share prices continued to tumble today on the Tokyo stock market.东京股市的股价今天继续暴跌。The outer walls looked likely to tumble down in a stiff wind.外墙看起来一刮强风就会倒塌。