Polynonanoylamide
[化] 聚壬酰胺; 尼龙-9
🗣️ 情景例句
The drama club is putting on a play tomorrow night.
明晚戏剧社要上演一出戏。
The milkman hopes the cows have plenty of milk every morning.
挤牛奶的人希望每天清晨都能得到大量牛奶。
No one discovers a rarity by chance.
无论是谁都不会一下子就发现一件珍品。