https://online2.tingclass.net/lesson/shi0529/0009/9907/537.mp3
https://image.tingclass.net/statics/js/2012
講解文本：
back on track 重回正軌，重上軌道，改過自新，恢復正常
We still have a lot of work to do to get everything back on track.
要讓一切回到正軌的話，我們還需多多努力。
His business is already back on track.
他的生意已經(jīng)重回正軌。
瘋狂練習吧!
