[] to fall rapidly in value or amount（价格或数量）暴跌，骤降◆Shares tumbled 8 per cent to 460 yen.股价骤降百分之八，跌到 460 日元。◆The euro tumbled sharply against the dollar yesterday.昨天欧元兑美元大幅下跌。▸ˈtumble
noun
[] ◆Shares in the troubled company took a sharp tumble yesterday.陷入困境的公司昨天股价暴跌。