Aval
[经] 保兑
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
George's father is an attorney.He has his own practice.
乔治的父亲是一个律师，他有他自己的实践经验。
This is Mr Green's room.
这是格林先生的房间。