Pentene
n. [化]戊烯
🔁 扩展释义
【医】 戊烯
🗣️ 情景例句
I know.
我知道。
How can it be so small and heavy?
这样小何以这么重呀？
although what impression any other civilization would thus get from us is best left unsaid.
至于其他文明行星对我们地球会有什么印象，还是不说为好。