Ulitis
龈炎
🗣️ 情景例句
OK, Philip. This is your third cup of coffee.
好啦 Philip。这是你第三杯咖啡了。
The roofer is patching the roof with metal.
屋面防水工在用铁皮修补屋顶。
They also have the disadvantage of being an expensive form of transport.
飞机另一个缺点是昂贵。