Pentandioic acid
[化] 戊二酸
🧩 词语组成解析
🗣️ 情景例句
My favorite non-work activity is …
我业余时间最喜欢做的就是跳舞。
He established a new business.
他开创了新事业。
One Monday, there were fewer people in the shop than usual when the woman came in,
有一个星期一，当这位妇女走进这家商场时，里面的人比往常少，