Backfield
n. 后卫；守卫区
🗣️ 情景例句
I've decided to stay at home and be a full-time mother.
我决定留在家里做一个专职母亲。
How many years have you been playing pingpong?
你打乒乓球多少年了？
Suddenly, they heard a voice behind them.
突然他们听到身后有声音。