Polymethylene compound
[化] 聚亚甲基化合物
🧩 词语组成解析
n. [化]聚亚甲基
🗣️ 情景例句
Keep it down!
小点儿声！
Every tide hath its ebb.
兴盛之日必有衰退之时。
Often the little words have meanings of their own.
这些小词常常都有自己本身的意思。