重要的是，要把食物当作营养品，而不仅仅是要吞咽的东西。
It is important to think about food as nourishment rather than just something to swallow.
但omega - 3只是益脑食物的冰山一角；已经证实许多营养物质有促进认知的功效，不仅是在儿童时期吃这类营养品有效，而是终身可食用受益。
But omega-3 is just the tip of the nutritional iceberg; many nutrients have proven cognitive effects, and do so throughout a person's life, not merely when he is a child.
不过，这两种食物都并非是一个完整的食物也不是适合长时间单一服用的营养品。
Neither, how-ever, is a complete food nor a proper nutriment alone for a long period of time.
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