Pentacarboxylic acid
[化] 五羧酸
🧩 词语组成解析
🗣️ 情景例句
It's OK. I'm sure they meant well,
没有关 。我敢说他们有心帮忙
Generally speaking, a contract cannot be changed after it has been signed by both parties.
一般来讲，合同一经双方签订就不得更改。
Everybody around me was smoking and I felt extremely uncomfortable.
我周围的每个人都在吸烟，我感到非常不自在。