Polyalkane
聚鏈烷
??? 情景例句
Well, there we are.
好了 ，就這樣了。
What size shoes do you wear?
你穿的鞋子是什么尺寸的？
Then he smiled and told me I would receive an extra thousand pounds a year!
然后他微笑了一下告訴我說，我每年將得到1，000 英鎊的額外收入。