Tear ducts（泪腺）operate on a normal basis to（）and protect the eye. When you have an emotion, they overact and create tears.（lubric-未来题库

Tear ducts（泪腺）operate on a normal basis to（）and protect the eye. When you have an emotion, they overact and create tears.（lubric

未来题库→百科

Tear ducts（泪腺）operate on a normal basis to（）and protect the eye. When you have an emotion, they overact and create tears.（lubrication）

正确答案：lubricate

Tags:泪腺 lubrication and

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