Overground
a. 地上的, 为社会所接受的
🗣️ 情景例句
I was quite surprised when I read in your letter that you had decided not to finish your studies at the university.
当我在你的信中看到你已决定终止大学学业时感到很是惊讶。
To work overtime
加班
Everybody will be watching anxiously as the new buildings go up.
大家都将急切地注视着新建筑的建成。