1. （人）公平的，明智的，理智的，有判斷力的
    If you think that someone is fair and sensible you can say that they are reasonable.

    e.g. He's a reasonable sort of chap...
           他是個理智的家伙。
    e.g. Oh, come on, be reasonable.
           噢，好了，理智一點。

2. （決定或行動）公平的，合理的
    If you say that a decision or action is reasonable, you mean that it is fair and sensible.

reasonable

    e.g. ...a perfectly reasonable decision...
           完全合理的決定
    e.g. At the time, what he'd done had seemed reasonable.
           那時他的所作所為似乎很合理。

3. （期望或解釋）合理的，有道理的
    If you say that an expectation or explanation is reasonable, you mean that there are good reasons why it may be correct.

reasonable

    e.g. It seems reasonable to expect rapid urban growth.
           似乎有理由期望城市快速發(fā)展。

4. （價錢）合理的，公道的，不太貴的
    If you say that the price of something is reasonable, you mean that it is fair and not too high.

reasonable的反義詞

    e.g. You get an interesting meal for a reasonable price...
           你花不多的錢就可以吃一頓很特別的飯。
    e.g. His fees were quite reasonable.
           他的收費還挺合理。

5. 還算好的;不錯的
    You can use reasonable to describe something that is fairly good, but not very good.

    e.g. The boy answered him in reasonable French...
           這個男孩用還算流利的法語回答他。
    e.g. He had never been able to make a reasonable living from his writing.
           他一直沒能靠寫作過上舒適的生活。

6. 較多的；相當大的
      A reasonable amount of something is a fairly large amount of it.

      e.g. They will need a reasonable amount of desk area and good light.
             他們將需要一個面積較大的擺放辦公桌的地方和充足的照明。