Poleis
polis的复数形
🗣️ 情景例句
about your family background.
关于你的家庭背景的。
The petroleum region is centered largely in the north.
那里的石油区大部分集中在北部。
when the plane suddenly turned round and flew back to the airport.
这时飞机突然调转头来，飞回了机场。