Polyset
聚酯树脂
🗣️ 情景例句
I've been thinking.
我一直在考虑。
He that would have eggs must endure the cackling of hens.
欲图逸，得先劳。
local epidemics of this disease could be created.
就可以使这种疾病在一个地区蔓延起来。