Polymethylene
n. [化]聚亚甲基
🗣️ 情景例句
You know, when I was your age,
要知道 ，当我像你这么大的时候，
I've got a headache.
我头痛。
Oh, that's quite early! Where are we going to meet?
噢，那很早！我们打算在哪儿会合？