Quaternaries
[化] 季盐; 季铵盐类
🗣️ 情景例句
Do you speak a foreign language?
你会讲外语吗？
Though you cast out nature with a fork, it will still return.
本性难移。
but I could not conceal the fact that I was impressed by the size of the diamonds.
其钻石之大给我留下了深刻的印象。