The real flecks - once you know what to look for - are unmistakable. The trouble is that they are smaller than grains of sand.

一旦你知道了金粒的样子就不会错过，问题是它们比沙粒还要小。

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What it is: Scientists designed this diet to contain 35 percent meat, more whole grains and locally sourced produce and more than 75 percent organic produce.

它是什么：科学家将这种饮食设计为含有35%的肉类，更多的粗粮和本地产的食材和75%以上的有机农产品。

youdao

What it is: Scientists designed this diet to contain 35 percent meat, more whole grains and locally sourced produce and more than 75 percent organic produce.

它是什么：科学家将这种饮食设计为含有35%的肉类，更多的粗粮和本地产的食材和75%以上的有机农产品。

youdao