Unsaturated polyester
[化] 不饱和聚酯
🧩 词语组成解析
a. 没有饱和的, 不饱和的
polyester
[['pɔliestə, ˌpɔli'estə]]
n. 聚酯\\n[化] 聚酯
🗣️ 情景例句
What is the charge for that?
那要多少费用？
I'll check it.
我去查一下。
Aunt Harriet lived in that leisurely age when servants were employed to do housework.
哈丽特生活在一个悠闲的年代，家务事都由雇来的佣人代劳。