blue

• The sea was of a lapis lazuli blue .
  大海呈天青石色。
• It was the intelligent blue eyes that dominated .
  引人注目的是一双炯炯有神的蓝眼睛。
• He was blue in the face with cold .
  他冷得脸上发青。
• I'm feeling rather blue today .
  我今天感到格外不乐。
• She arrived out of the blue .
  她没有事先告知就来了。
• White light minus blue light is yellow or red in hue .
  白光中除去蓝光就呈黄色或红色。
• The sky was clear and blue .
  蔚蓝色的天空睛朗无云。
• The sky was clear and blue .
  蔚蓝色的天空晴朗无云。
• The castle stood out in relief against the blue sky .
  城堡在蓝天的衬托下显得轮廓分明。