pale complexion

例句：

1. 1.The sun had set, leaving the skya pale blue.
   太阳已经落山，天空呈现出淡蓝色。
2. 2. Her skin was pale, and she looked very weak.
   她的皮肤苍白，看起来很虚弱。
3. 3. The old man's face was pale with fear.
   老人的脸色因恐惧而苍白。