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来源：雅诚德英语网
In fact, the industry now supplies 370 different types and styles in more than 70 different colors and in 18 degrees of hardness.
事实上，工业界现在提供着370种不同种类不同风格、超过70种不同颜色、18种不同硬度的铅笔。
In fact, the industry now supplies 370 different types and styles in more than 70 different colors and in 18 degrees of hardness.
事实上，工业界现在提供着370种不同种类不同风格、超过70种不同颜色、18种不同硬度的铅笔。