Diene
[ ['daii:n] ]
高中 Senior High
[化] 双烯; 二烯烃
🗣️ 情景例句
but when I received the letter
但是当我收到那封信
He is playing on the swings outside.
他正在外面荡秋千。
and an American-made dialysis machine needs the EU's okay before is hits the market in Europe.
而美国制造的透析仪也要得到欧盟的首肯才能进入欧洲市场。