late 14c., "pertaining to reason;" mid-15c., "endowed with reason," from Old French racionel and directly from Latin rationalis "of or belonging to reason, reasonable," from ratio (genitive rationis) "reckoning, calculation, reason" (see ratio).
雙語例句
1. All your arguments presuppose that he's a rational, intelligent man.
你所有論點的前提都是他是一個理性而聰明的人。
來自柯林斯例句
2. The arrangement presumes that both lenders and borrowers are rational.
這一協議假定借貸雙方都是在神誌清楚的狀態下簽訂的。
來自柯林斯例句
3. He was rational and consistent in the conduct of his affairs.
他處理私事時頭腦清楚，始終如一。
來自柯林斯例句
4. Did he come across as a sane rational person?
他看起來是一個正常而理智的人嗎？
來自柯林斯例句
5. The alphabet might be more rational if all the vowels came first.