Pentanedioic acid
[化] 戊二酸
🧩 词语组成解析
🗣️ 情景例句
It's two words.
两个字。
One must draw the line somewhere.
人之所为，总有限度。
The children are no longer young, and they know who Father Christmas really is.
孩子们不小了，他们知道真正的“圣诞老人”是谁。