Holocephali
全头亚纲
🗣️ 情景例句
Find a productive hobby, and see if you can learn something.
找一个具有意义的爱好，看你能否从中学到什么。
Some persons do first, think afterwards, and then repent for ever.
有些人做了再思考，从而悔恨终身。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。