Chitin
n. 几丁质, 壳多糖\\n[化] 壳多糖; 几丁质; 甲壳质
🗣️ 情景例句
How'd you do it?
是如何办到的？
Diligence is the mother of good luck.
刻苦是成功之母。
Could I have this sample free of charge?
这样品可以免费送我吗？