Flotator
浮选机
🗣️ 情景例句
Have you ever done any correspondence work?
你有处理文书的经验吗？
Everything is good in its season.
万物逢时皆美好。
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。