As a baby emerges from the darkness of the womb, its rudimentary sense of vision, which would deemed legally blind for an adult, would be rated about 20/500.
写错了，应该是 A baby emerges from the darkness of the womb with a rudimentary sense of vision that would be rated about 20/500;an adult with such wision would be deemed leally blind. 这句话该怎么理解呢？谢谢。
A baby emerges from the darkness of the womb with a rudimentary sense of vision that would be rated about 20/500;an adult with such wision would be deemed leally blind. 一个刚从黑暗的子宫里出生的婴儿拥有一个发育不全（不知道这样解释对不对，反正可以理解）的视觉的几率大约是20/500， 一个拥有一样视觉的成年人肯定会被认为是瞎子。
