When someone asks for the rationale, they want the reasons behind a decision or a belief — not only what you chose, but why. A hospital might publish the rationale for a new visiting rule; a student might ask for the rationale behind a grade.

When someone asks for the rationale當有人要你提出 rationale they want the reasons behind a decision or a belief他們要的是一個決定或想法背後的理由 not only what you chose, but why不只是你選了什麼，而是為什麼 A hospital might publish the rationale for a new visiting rule醫院可能會公布一項新探病規定的理由 a student might ask for the rationale behind a grade學生也可能會要求老師說明打這個分數的理由

The word sits on the formal side. At home, people usually just say "why." You will meet it in essays, meetings, and news. Though actually, the rationale people write down is sometimes cleaner than the real mix of fear, habit, and last-minute change that produced the choice.

The word sits on the formal side這個字偏正式 At home, people usually just say "why."在家裡，大家通常就只說「why」 You will meet it in essays, meetings, and news你會在論文、會議、新聞裡遇到它 Though actually不過其實 the rationale people write down is sometimes cleaner than the real mix of fear, habit, and last-minute change that produced the choice人們寫下來的 rationale 有時候比真正促成那個選擇的一團恐懼、習慣和臨時改變還要乾淨俐落

It is a noun. The cousin word rational is an adjective: a rational plan is a plan that uses reason.

It is a noun它是名詞 The cousin word rational is an adjective它的同源詞 rational 是形容詞 a rational plan is a plan that uses reason a rational plan 就是講道理、用理性思考出來的計畫