Sullivan eyes also almost blind in childhood, to understand the loss of the light.

苏利文在小时候眼睛也差点失明，了解失去光明的痛苦。

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And they soon found out that he was almost blind and had cataracts 2 on his eyes.

他们很快就发现他眼睛有白内障，都快瞎了。

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Canavan does most of his digging in the dark -- not because he's trying to hide but because he's almost completely blind and the sunlight hurts his eyes.

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