deep in thought 沉思,深思
You look deep in thought.
你看起來在想事情啊。
After Mary left, Mike was deep in thought the entire day.
瑪麗離開後,麥克整天都在沉思。
老師微信:hahayifu,也就是“哈哈衣服”4個字的拼音
老師微博:口語老師Yuyu