最終更新日：2024/08/03
The meibomian glands secrete an oily substance that helps lubricate the eyes.
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The meibomian glands secrete an oily substance that helps lubricate the eyes.
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The meibomian glands secrete an oily substance that helps lubricate the eyes.
The meibomian glands secrete an oily substance that helps lubricate the eyes.
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