Polyhexamethylene adipate
[化] 聚己二酸亚己基酯
🧩 词语组成解析
己二酸
🗣️ 情景例句
They are expecting their first child.
他们在怀他们的第一个小孩。
How long has it been since you've heard from your uncle?
自从你听到叔叔的消息有多长时间了？
No, I think it'll be all right for him to go to school.
不，我想他去上学没什么关系。