Alkylene
亚烃基, 烯化, 烷撑
🗣️ 情景例句
You must be green to believe that!
你真幼稚，竟然相信那个。
Just the other way round.
正相反。
we quickened our pace and made our way rapidly towards the stream where we hoped the boatman was waiting.
快速地朝深溪边走去，希望船夫还在那儿等着我们。