Polyyne
聚炔烃
🗣️ 情景例句
You got it.
答对了。
Billy, get off the doggie's tail.
比利，得扰人处且饶人，放他一马吧。
Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long.
尽管他设法拍了一些十分精彩的照片，但他却不能在火山附近停留太长的时间。