Polynonamethylene adipate
[化] 聚己二酸亚壬基酯
🧩 词语组成解析
己二酸
🗣️ 情景例句
You were four or five years old, I think.
当时你才四、五岁 我想。
It's wrong to break the law.
犯法是不对的。
Is it broken?
弄坏了吗？