動詞 reason:

1. decide by reasoning; draw or come to a conclusion
   同義詞：reason, reason out, conclude
2. present reasons and arguments
   同義詞：argue, reason
3. think logically
   同義詞：reason

形容詞 reasoned:

1. logically valid
   同義詞：sound, well-grounded
2. resulting from careful thought
   同義詞：considered, well thought out

1. He reasoned that if we started at dawn, we would be there by noon.
   他推斷，我們要是黎明出發(fā)，中午就能到。
2. I reasoned with her for hours about the danger, but she would not change her mind.
   我跟她爭辯了幾個小時，想讓她認識到危險性，但她就是不聽。
3. I reasoned rather than quarreled with him.
   我理論，而不是和他吵架。
4. Copernicus reasoned that the earth revolved around the sun.
   哥白尼論證了地球繞著太陽轉。