Offical
官员,公务上的,有权威的,下式的
🗣️ 情景例句
You're welcome. Good-bye.
不用谢。再见。
If he had only had enough money,he would have bought that house.
如果他仅仅有了足够的钱，他就会买那房子。
The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass.
这座水晶宫不同于世界上所有的其他建筑，因为它是用钢和玻璃建成的。