Polyene
n. 聚烯\\n[化] 多烯; 多烯烴
??? 情景例句
What's your trade-in policy?
這里對汽車是怎樣做折價處理的？
I hope no questions about the terms.
我看合同的條款沒有什么問題了。
We realized that they must have become unduly frightened by the rising flood,
我們意識到他們一定是被不斷上漲的洪水嚇壞了。