rational

英文造句：

1. The examiners put a premium on rational argument.
   評審們對以理服人的論據給以高度評價。
2. The quality or condition of being rational.
   合理性合乎理性的性質或狀態
3. No rational person would go to work in his pyjamas.
   任何神智正常的人都不會穿著睡衣去上班。
4. Man is a rational being.
   人是有理性的生物。

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詞型變化：

名詞:rationalness 副詞:rationally 

詞意辨析：

rational, reasonable, sensible

這些形容詞均有“明智的，合情合理的”之意。
rational: 指有理性的，有思維推理能力，而不是憑感覺衝動從事。
reasonable: 表示合乎情理、公正或務實。
sensible: 一般指合乎常情、切合實際的行為與思想，側重明白事理。

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英文解釋：

名詞 rational:

1. an integer or a fraction
   同義詞：rational number

形容詞 rational:

1. consistent with or based on or using reason
2. of or associated with or requiring the use of the mind
   同義詞：intellectual, noetic
3. capable of being expressed as a quotient of integers
4. having its source in or being guided by the intellect (distinguished from experience or emotion)