Diolefine
[化] 二烯; 二烯属
🗣️ 情景例句
It's nice to see young love.... Oh, to be young again!
真高兴看见年轻人相爱……。啊 能再恢复年轻多好
Are you married?
你结婚了吗
After buying a new chain I was faced with the insurmountable task of putting the confusing jigsaw puzzle together again.
我买来一根新链条后，面临的就是如何把这些令人眼花缭乱的拼板重新组装起来。