Mesobiladiene
[化] 二次甲基中膽色素
??? 情景例句
Nowadays many young people cohabit together without legal permission.
如今很多年輕人未獲得法定允許就一起同居了。
He has a dog.
他有一條狗。
I would like to wash the clothes for you.
我愿意幫你洗這些衣服。