Huanghua pear is an important fruit in China. The fruit diameter and surface defects are important indices in the classification of Huanghua pear.

黄花梨是中国的一种重要水果，果径和果面缺陷面积是黄花梨分级的两项关键指标。

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For example, a red delicious apple is a part of the classification apple, which in turn is a part of the fruit class, which is under the larger class food.

例如，一个美味可口的红苹果是苹果类的一员，而苹果又是水果类的一部分，再进一步，水果又是食物这更高一级类的一部分。

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For example, a red delicious apple is a part of the classification apple, which in turn is a part of the fruit class, which is under the larger class food.

例如，一个美味可口的红苹果是苹果类的一员，而苹果又是水果类的一部分，再进一步，水果又是食物这更高一级类的一部分。

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