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If you are both short-sighted and long-sighted, you need bifocal spectacles or contact lenses.
如果你既是近视又是远视，你就需戴双光眼镜或隐形眼镜。
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Left untreated, young children who are long-sighted may eventually lose vision in one eye.
左未处理，幼童谁是长期的眼光，最终可能失去高瞻远瞩，在一只眼睛。
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