Chitin
n. 几丁质, 壳多糖\\n[化] 壳多糖; 几丁质; 甲壳质
🗣️ 情景例句
Oh, I took the liberty of ordering some breakfast for you.
噢 ，我冒昧给你们订了早餐。
We have a lot of invitation cards, but they are all for the same date.
我们接到了许多请帖，但是上面的日期却全都是同一天。
My cousin's a sailor.
我的堂兄是个海员。