Hypovalve
下瓣
🗣️ 情景例句
Good-bye, Robbie. Good luck.
再见 ，Robbie ，祝你好运。
Circumstances are therulers of the weak, instrument of the wise.
弱者困于环境，智者利用环境。
Education is one of the key words of our time.
教育是我们这个时代的关键词之一。