今天我们要学的词是 tumble. Tumble动词，意思是跌落。The latest poll shows that British Prime Minister Theresa May's approval rating has tumbled to its lowest level, with only a third of the public satisfied with her work. 最新民调显示，英国首相特蕾莎·梅的支持率跌落到最低点，只有三分之一的民众对她的工作感到满意。After dramatic gains, bitcoin tumbled nearly 20% in 10 hours on Friday. 价值暴涨过后，比特币星期五在10小时的时间内大跌，跌幅近20%。好的，我们今天学习的词是tumble, tumble, tumble ...