这种方法对于那些中性色(译者注：非彩色)的鞋子最有效果，比如黑色、深蓝、灰色、灰褐色、棕褐色或者棕色等。
This approach works most successfully with shoes that are neutral colors, such as black, navy, gray, taupe, tan, or brown.
红紫泥、灰棕紫泥、红棕紫泥依次是四川盆地典型具有代表性的酸性、中性和石灰性紫色土。
The typical and representative purple soils in Sichuan Basin are red purple soil (acidic), gray-brown purple soil (neutral), and red-brown purple soil (calcareous).
红紫泥、灰棕紫泥、红棕紫泥依次是四川盆地典型具有代表性的酸性、中性和石灰性紫色土。
The typical and representative purple soils in Sichuan Basin are red purple soil (acidic), gray-brown purple soil (neutral), and red-brown purple soil (calcareous).
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