Vertebratus
a. [气](云)脊状的
🗣️ 情景例句
You're welcome.
不用客气。
That depends.
那得看情况而定。
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。