但是岩石当然是许多颜色。区别是微妙的,但我可以保证的不仅是一个纯灰色...一个下午我花了五个小时,只是盯着一块岩石,试图看到它的配色方案。
(But rock, of course, is many colors. The distinction is subtle, but it is not just one plain grey, that I can promise...I spent five hours one afternoon just staring at a rock trying to see into its color scheme.)