https://online2.tingclass.net/lesson/shi0529/0009/9907/209.mp3
https://image.tingclass.net/statics/js/2012
講解文本：
play it by ear 見機行事，隨機應變
Let's play it by ear when we get there.
到了那兒，我們再見機行事。
We should have a plan for tomorrow, or we will have to play it by ear.
我們應該準備一個計劃，不然只能走一步算一步了。
瘋狂練習吧!
