Conversion of olefines
[建] 烯烃的转化
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
(olefine 的复数) [化] 烯烃; 链烯烃
🗣️ 情景例句
You will only have to pay another ten cents and a nickle for your child.
你只需另外再付10美分，而你的孩子只要再付5美分。
Who is going to show?
谁表演？
2 Two friends meet at school on the first day of term.2
两个朋友于新学期的第一天在学校见面。