I think there are 3 kinds of minerals in this granite. The first one is red, the second is white and the third one is black.
我认为这块花岗岩石中有三种矿物类型，第一种是红色的矿物，第二种矿物是白色的，第三种是黑色的。
RGB stands for 3 kinds of color—red, green, blue.
RGB 指的是能显示三基色——红，绿，蓝。
Pitaya fruit according to their skin colour can be divided into the red one white meat, red one red meat, yellow skin white meat 3 kinds big.
火龙果按其果皮果肉颜色可分为红皮白肉、红皮红肉、黄皮白肉3大类。
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