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All the materials used were of the highest grade.

使用的材料全是优质品。

《牛津词典》

La Platosa produces the highest-grade of silver in Mexico, according to their website.

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All three receive Morningstar's highest rating of "gold" or its second-highest "silver" grade.

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Dry aging is so important that it supplants USDA grades: dry aged choice beef tastes much better than the highest grade, prime, un-aged.

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