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来源:雅诚德英语网
Vitamin C is essential for your body to make collagen, the protein that keeps skin firm and elastic.
维生素C是身体合成胶原所必须的物质,胶原蛋白能使皮肤紧致有弹性。
Vitamin C is essential for your body to make collagen, the protein that keeps skin firm and elastic.
维生素C是身体合成胶原所必须的物质,胶原蛋白能使皮肤紧致有弹性。