Ultrahard
超硬; 特硬
🗣️ 情景例句
why don't you introduce everybody to Susan?
何不将她们每一位介绍给 Susan？
A little leak will sink a great ship.
千丈之堤溃于蚁穴。
The comparable speed from the Moon is only 1.5 miles per second.
而从月球出发的相应速度只是每秒1。5英里。