Polycyclopentadiene
聚环戊二烯
🗣️ 情景例句
Well, when do you think you can come over to work?
你想什么时候开始工作呢？
They lacked for nothing.
他们什么都不缺。
We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.
我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。