
rational
词源
源自拉丁语 'rationalis',来自 'ratio'(计算、理由),最早出现在14世纪晚期英语中。
adjective
❶ 基于逻辑或理性的,指思考或行为符合道理,不被情绪左右。常用于描述人的思维或决策过程。
“She made a rational decision after considering all the facts.”
(她在考虑了所有事实后做出了理性的决定。)
“It's important to stay rational during an emergency.”
(在紧急情况下保持理性很重要。)
❶ 数学中指可以表示为两个整数之比的数,与无理数相对。用于描述数字的性质。
“The number 0.5 is a rational number because it can be expressed as 1/2.”
(数字0.5是有理数,因为它可以表示为1/2。)
“All integers are rational numbers.”
(所有整数都是有理数。)
noun
❶ 指理性的人或有理性的事物。这个用法较为少见,多出现在哲学讨论中。
“In his philosophy, humans are considered rationals.”
(在他的哲学中,人类被认为是理性的存在。)
“The debate focused on the nature of the rational.”
(这场辩论聚焦于理性的本质。)
常见短语
rational thinking — 理性思考,指基于逻辑和事实而非情感的思考方式。
“Critical problems require rational thinking rather than emotional reactions.”
(关键问题需要理性思考而非情绪化反应。)
rational choice — 理性选择,经济学概念,指个人基于自身利益最大化做出的决策。
“The theory of rational choice assumes that people act in their own best interest.”
(理性选择理论假设人们会按照自身最大利益行事。)