taken for granted
It means that the reason is of course like this. It means that what happens in reason is reasonable and can not be doubted.
The origin of Idioms
Wang Tong's Wenzi weixiangpian in Sui Dynasty: "it's not debate, but reason is ear.". "
Idiom usage
Subject predicate; predicate, attribute, adverbial; commendatory
Examples
It's natural that good people are blessed and evil people are harmed. ——Zhao Bi in Ming Dynasty
Chinese PinYin : lǐ suǒ dāng rán
taken for granted
The stone is red but not taken. shí chì bù duó
a married couple very much in love. kàng lì qíng shēn