Quillback
n. 背鳍前部象翎管而突出的北美产淡水鱼
🗣️ 情景例句
May I use the phone?
我可以用电话吗
You must not pledge your own health.
切不可把健康作孤注一掷。
Mars is too dry and poor in oxygen, Venus far too hot, and so is Mercury,
火星太干燥又缺氧，金星太热，水星也一样。