Opalon
[化] 氯乙烯树脂及其化合物的商品名
🗣️ 情景例句
Yes, I have been working in an advertisement company in the last two years.
是的，在过去两年里，我一直在一家广告公司工作。
Troubles never come singly.
祸不单行。
We invited them to our party but they decided not to come.
我们请了他们参加聚会，但他们决定不来。