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It is essential that your diet is varied and balanced.

重要的是你的饮食应当是多样而平衡的。

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PO Bailey, who dishes up three meals a day, said it is essential to provide a diet high in vitamin C and nutrients when away for long periods.

士官柏利负责潜艇上的一日三餐。他说长期在外航行，饮食的维生素c含量要高，要有营养很关键。

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Bamboo is an essential part of the diet of many wild creatures, notably the giant panda, which eats nothing else.

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Campbell said he grew up on a dairy farm and for a long time held to the belief that animal protein was an essential part of a healthy diet.

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Calcium and vitamin D, by contrast, are essential to maintaining the bones and can be had by adjusting your diet.

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