Quaternary ammonium compound
[化] 季铵化合物; 四级铵化合物
🧩 词语组成解析
a. 四个一组的, 四元的, 四价的, 季的\\n[计] 四进制的, 四元的
n. 铵\\n[化] 铵
🗣️ 情景例句
They concluded that the goods were of good quality and proved no problem.
他们断定货物质地优良，并证明没有任何问题。
An inch in a miss is as good as an ell.
错无分大小，有错皆不好。
They are only too delighted to accept the invitation.
他们非常乐意接受邀请。