第三十六条国家提倡珍惜和节约粮食，并采取措施改善人民的食物营养结构。
Article 36 the State encourages people to cherish and economize on the use of grain, and takes measures to improve people's food nutrition patterns.
如果把一种食物加入到饮食结构中去，那么你不但加入了你感兴趣的营养素，你同时还加入了一些其他物质。
Add a food to the diet and you are adding other substances besides the nutrient you are interested in.
通过脂肪酸、氨基酸等分子的稳定同位素特征，可以更细致更准确地了解食物网的营养结构、物质和能量的传递过程。
Stable isotopic characteristics of fatty acid and amino acid can reveal trophic structures, matter and energy flow processes of Marine food webs in detail.
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