darken

• His eyes darkened and his brow wrinkled .
  他的眼睛阴沉起来，眉头也皱起来了。
• His glance again wandered away to the darkened street .
  他的视线又转至黑沉沉的街上。
• Do n't darken my door again .
  下次不要再到我家来了。
• She noted that my areola darkened and thickened .
  她注意到我的乳晕颜色深了，而且厚了。
• It was clouding over outside and the lake was darkening .
  外面阴云四布，湖上阴暗下来。
• Clouds darkened the sun .
  云层使太阳暗然无光。
• It is here that twain's satirical vision darkens .
  吐温那带有讽刺意味的眼光变得更加深沉了。
• Toward nightfall the sky darkened over puerto rico .
  将近黄昏的时候，波多黎各上空阴云密布。
• His face darkened with anger when he heard the bad news .
  他听到坏消息，脸色因愤怒而变阴沉。
• Toward nightfall the skies darkened over puerto rico .
  将近黄昏的时候，波多黎各上空阴云密布。