Valvula
n. 瓣, 瓣膜\\n[医] 瓣, 瓣膜
🗣️ 情景例句
but this is an important opportunity.
但这是一次很重要的机会。
To know the disease is half the cure.
找出病根等于治愈了一半。
What a great person!
多么了不起的人！