Pyrazofurin
吡唑呋喃菌素
🗣️ 情景例句
I really must be going now.
现在我真的该告辞了。
A colt you may break,but an old horse you never can.
小驹犹可练，老马最难驯。
Textile business has become more and more difficult since the competition grew.
随着竞争的加剧，纺织品贸易越来越难做了。