blackening

名词 blackening:

1. changing to a darker color
   同义词：darkening

动词 blacken:

1. make or become black
   同义词：blacken, melanize, melanise, nigrify, black
2. burn slightly and superficially so as to affect color
   同义词：char, blacken, sear, scorch

1. The sky blackened.
   天空变得一片漆黑。
2. Blackened by burnt cork.
   用烧焦的软木涂黑的