Polyvinylene
聚乙烯撑, 聚次亚乙烯
🗣️ 情景例句
Do you really think so?
你真的这么想吗？
I don't know the answer, but let me ask Mr. Chen to comment on that.
我不知道答案，让我问一下陈先生看他有什么看法。
Please give him my regards.
请代我问候他。