1. 善行;正直的品性;良好的习惯
    Virtue is thinking and doing what is right and avoiding what is wrong.

    e.g. Virtue is not confined to the Christian world...
           善行并不是仅限于基督教世界。
    e.g. She could have established her own innocence and virtue easily enough.
           她本可以轻易地证实自己纯真善良的品性。

2. 美德;德行
    A virtue is a good quality or way of behaving.

    e.g. His virtue is patience...
           耐心是他的美德。
    e.g. Her flaws were as large as her virtues...
           她的缺点和优点一样多。

3. 优点;长处
    The virtue of something is an advantage or benefit that it has, especially in comparison with something else.

    e.g. There was no virtue in returning to Calvi the way I had come...
           沿着我来的路线返回卡尔维并不可取。
    e.g. Its other great virtue, of course, is its hard-wearing quality.
           它的另一个突出优点当然就是经久耐用。

4. 靠;凭借;由于;因为
    You use by virtue of to explain why something happens or is true.

    e.g. The article stuck in my mind by virtue of one detail...
           由于一个细节，这篇文章在我脑海里印象深刻。
    e.g. Mr Olaechea has British residency by virtue of his marriage.
           奥拉伊奇先生通过结婚而取得在英国的永久居留权。

5. （假装）心甘情愿地做（迫不得已的事）
    If you make a virtue of something, you pretend that you did it because you chose to, although in fact you did it because you had to.

virtue的翻译

    e.g. The movie makes a virtue out of its economy.
           这部电影充分利用了其有限的成本。