Born normally, Helen Keller lose her ability to see and hear at nineteen months old.

海伦·凯勒出生的时候是个正常的孩子，但在她十九岁的时候失去了视力和听力。

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Born normally, Helen Keller lose her ability to see and hear at nineteen months old.

海伦·凯勒出生的时候是个正常的孩子，但在她十九岁的时候失去了视力和听力。

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