夜雨的陪伴 发表于 2020-2-23 11:57
最近太黄了这个鸟。
Semen is a mixture of fluids that contains sperm, but the majority of semen is composed of over 200 separate proteins, as well as vitamins and minerals, including vitamin C, calcium, chlorine, citric acid, fructose, lactic acid, magnesium, nitrogen, phosphorus, potassium, sodium, vitamin B12, and zinc.
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