reason

The extremely low price was the main reason for buying that old house in the country.

(Chinese) 极低的价格是买下乡下那栋旧房子的主要原因。

The police are still looking for the real reason why the car accident happened.

(Chinese) 警察仍在寻找车祸发生的真实原因。

It is important to use your reason to decide on a career, not just your emotions.

(Chinese) 决定职业道路时使用理性很重要，而不仅仅是凭感情。

Humans are unique among animals because of their advanced ability to use reason and logic.

(Chinese) 由于具有运用理性和逻辑的高级能力，人类在动物中是独特的。