黯然失色 [àn rán shī sè]

• be cast into the shade; appear very dull or poor in comparison; be eclipsed; be outshone; be overshadowed; be thrown into the shade; cut sb. out of all feathers; fall into the shadow; lose brilliancy; pale by comparison; pale into insignificance; put sb. to shame; suffer an eclipse; tarnish; take (the) shine off [out of] sb. [sth.]:

  The top of the mountain was covered with a dark cloud, which took shine off the front view of the mountain.

  一片乌云遮住山顶， 使山前的景物黯然失色。