Olefine
[化] 烯烴; 鏈烯烴
??? 情景例句
next time
下一次
Of evil grain,no good seed can come.
壞谷無好種。
I made your birthday cake last night, when you were in bed, Mrs Read answered.
“昨天晚上你睡覺時，我就做好了你的生日蛋糕，”里德夫人回答說。