Ulitis
龈炎
🗣️ 情景例句
I know.
我知道。
A good horse often needs a good spur.
好马常要好靴刺。
Aeroplanes have the reputation of being dangerous and even hardened travellers are intimidated by them.
飞机以危险而著称，连老资格的旅行者也怕飞机。