Pentone
缬烯炔, 异戊烯炔
🗣️ 情景例句
Kind of a second honeymoon.
类似二度蜜月的假期。
Sadness and gladness succeed each other.
悲喜互继，哀乐相续。
As his flat is in a large town, he has no garden of his own.
他住在大城市里的一所公寓里，没有自己的花园。