Seebenite
堇长角页岩
🗣️ 情景例句
What is your career objective?
你的事业目标是什么？
Do not swap horses when crossing a stream.
处在危难中，不宜大更动。
Some children can cover the whole length of the pool without coming up for breath even once.
有些孩子能够跑完游泳池的全长而不用露出水面换气。