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一个正常人每年平均要分泌半公升眼泪。从理论上说,规律是每天分泌1毫升半,由每分钟10-15次的眨眼运动把它们分散到角膜上去——每天自动分泌的这种悲伤的微滴,对于保持眼睛的清洁和湿润是必不可少的。一般来说,湿润玻璃体的眼泪,是正常的和必需
An average person secrete about half a liter of tears a year. In theory, the rule is to dispense 1 ml each half a day and spread them onto the cornea with 10-15 blinks per minute - this sad, self-secreting droplet every day, for keeping the eyes clean and moist necessary. In general, wet vitreous tears are normal and necessary