只有百分之十八视力严重受损的人永久失明，大部分盲人能够区分光明和黑暗。

Only 18 percent of people who have visual impairments are totally blind. Most are able to differentiate between light and dark.

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只有百分之十八视力严重受损的人永久失明，大部分盲人能够区分光明和黑暗。

Only 18 percent of people who have visual impairments are totally blind. Most are able to differentiate between light and dark.

youdao