defective sight

英 美
  • 视觉缺陷
  • defective adj.有缺陷的;[语]不完全变化的n.有缺陷的人
  • sight n.视力;看见;视线;景物v.瞄准;看见;观测
    1. A person is blind to the extent that he must devise alternative techniques to do efficiently those things he would do with sight if he had normal vision.
      一个人只有在大量使用特殊技能弥补视觉缺陷时,才能被视为真正的盲人。