Approof
n. [古语]；＝ approval
🗣️ 情景例句
Don't open the door if you don't know who it is.
如果有陌生人敲门不要开门。
How long?
多长？
The Games will be held just outside the capital and the whole area will be called 'Olympic City'.
奥运会就在首都市郊举办，整个地区将被称作“奥林匹克城”。