virtue  
noun uk/ˈvɜː.tʃuː/ us/ˈvɝː.tʃuː/
  (GOOD MORALS)      
 C2 [ C or U ]美德;高尚品德 
a good moral quality in a person, or the general quality of being morally good
  Patience is a virtue. 耐心是一种美德。 
 Compare: vice noun (FAULT)
 - More examples
 - In the novel, Constanza is a paragon of virtue who would never compromise her reputation.
 - Her virtue would be proof against his charms.
 - Discretion is a virtue worth cultivating.
 - Tact is not one of his virtues.
 
  (ADVANTAGE)      
 C2 [ C or U ]优点;好处 
an advantage or good thing
  Would there be any virtue in taking an earlier train? 乘坐早一班的火车有什么好处吗? 
 The actress has appeared in many TV ads extolling (= praising) the virtues of hair products. 看见这位女演员在电视上吹捧美发产品的种种优点总是让人感觉怪怪的。 
   (BECAUSE OF)     
by virtue ofC2 formal 因为;由于;凭借
because of; as a result of
  She succeeded by virtue of her tenacity rather than her talent. 她成功靠的是坚韧不拔,而不是天赋。 
 Idiom   
make a virtue (out) of somethingidiom  将(尤指坏事)变好事;对…因势利导
to use something, especially a bad situation, to your advantage
  I had a couple of months to spare between jobs so I thought I'd make a virtue of necessity by acquiring a few new skills. 我换工作期间有几个月空闲时间,因此不如趁此机会学一些新技能。