Puromellitonitrile
1,2,4,5-苯四腈
🗣️ 情景例句
Well, I wasn't clear about my future,
我对自己的未来当时也不清楚，
Experience keeps no school, she teaches her pupils singly.
亲身经验，才是经验。
The petrol had nearly all been used up.
汽油几乎已经用光。