They are used for seeing in the dark.改为同义句

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Theyareusedforseeinginthedark.改为同义句Theyareusedforseeinginthedark.改为同义句Theyareusedforseeinginthedark.

They are used for seeing in the dark.改为同义句
They are used for seeing in the dark.改为同义句

They are used for seeing in the dark.改为同义句
They are used to see in the dark .