Methylenedigallic acid
[化] 亚甲基二┢酸
🧩 词语组成解析
🗣️ 情景例句
We have four people in the family, my parents, my elder brother and I.
我家有 4 口人，我的父母，我的哥哥和我。
Are you finished?
请问您还用吗？
Look! It's inside another pot. What was that pot used for?
“瞧！还是大壶套小壶呢。有什么用途？”