https://online2.tingclass.net/lesson/shi0529/0009/9907/323.mp3
https://image.tingclass.net/statics/js/2012
講解文本：
think on one's feet 急中生智，反應(yīng)敏捷，隨機(jī)應(yīng)變
Mike is really good at thinking on his feet.
Mike很善于急中生智。
There's no time for getting ready.You have to think on your feet.
沒(méi)時(shí)間準(zhǔn)備了，你只能隨機(jī)應(yīng)變
瘋狂練習(xí)吧!
