Polymethylene derivatives
[建] 聚甲烯衍生物
🧩 词语组成解析
n. [化]聚亚甲基
派生物
🗣️ 情景例句
Harry's a professional camper, Mom.
Harry是露营专家，妈妈。
I answer telephones and do some typing.
我接电话和打字。
That's about the best we can do on that.
那差不多是我们所能开出的最低价了。