reason

原因、緣故

Nobody could explain the real reason for the sudden delay.

沒有人能說明這次突然延誤的真正原因。

理由、根據

There is no reason to panic over a single bad review.

為了一則負評就慌張，實在沒有理由。

理性、理智正式

He believes human reason can solve almost any problem.

他相信人類的理性幾乎可以解決任何問題。

道理、情理

She refused to listen to reason and walked out of the meeting.

她不聽勸，硬是走出了會議室。

推論、推斷

She reasoned that the back door must have been left open.

她推斷後門一定是被人留著沒關。