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
She was sick so the didn't attend her classes.
她生病了，所以没上学。
The belly has no ears.
食欲不长耳。
When I was young, I'd listen to the radio, waiting for my favorite songs.
当我还是个小女孩的时候，我常听着收音机，等待我最喜欢的歌。