Rhynioceae
鹿角蕨科
🗣️ 情景例句
He is working like a horse.
他努力工作。
The used key is always bright.
常用的钥匙总是光亮的。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。