Ethylenic
a. ethylene的變形
??? 情景例句
Have you ever taken Cathay Pacific?
你有沒有搭過國泰航空公司的班機？
You certainly are an interesting person!
你的確是個風趣的人。
There is no sky in June so blue that it does not point forward to a bluer,
六月蔚藍的天空總使人遙想一個更加蔚藍的蒼穹；