Heparitin
类肝素, 乙酰(型)肝素
🗣️ 情景例句
Oh dear! What a pity!
啊！真遗憾！
It is never too late to learn.
什么时候学习都不晚。
China is great! We like school, and the food is good too.
中国太棒啦！我们喜欢学校，这里的吃的也挺好。