https://online2.tingclass.net/lesson/shi0529/0009/9907/759.mp3
https://image.tingclass.net/statics/js/2012
講解文本:
deep in thought 沉思,深思
You look deep in thought.
你看起來(lái)在想事情啊。
After Mary left, Mike was deep in thought the entire day.
瑪麗離開后,麥克整天都在沉思。