Alkene
[ ['ælki:n] ]
高中 Senior High
n. [化]烯烃,链烯
🗣️ 情景例句
The firm isn't making out as well as was hoped.
公司并不像原来期望的那样进展顺利。
No sweet without some sweat.
不劳则无获。
At last firemen have put out a big forest fire in California.
消防队员们终于扑灭了加利福尼亚的一场森林大火。