Alkene
[ ['ælki:n] ]
高中 Senior High
n. [化]烯烃,链烯
🗣️ 情景例句
... Oh ... I see.... Please, I know he wants to talk to you....
……啊……我懂。……麻烦 我知道他想跟 说话。
He lived in California until he was seventeen.
他生活在加利福尼亚直到他十七岁。
'It's a waste of time.
“这是浪费时间。