Fat, glucoprotein, calcium, phosphorus, etc. are the essential substances for the activities of the brain. The simplest method to supplement these substances is to obtain them from foods.

• 脂肪、糖蛋白、钙、磷等物质是大脑活动时必不可少的，补充这些物质的最简单的途径，是从食物中摄取。