并且通过实例，分析和比较了它们呈现颜色的不同原因。
The different reasons for appearing colours are analysed and compared through examples.
它通常呈现的是一种正常的皮肤颜色，要么是红色，要么是棕色，甚至是灰色，还有一些黑斑。
It's a normal skin color, the one it generally presents, is either red or brown or even grey, and it's speckled with dark spots.
他们对老鼠的脑组织进行染色，这样不同种类的突触就可以呈现不同颜色。
They stain the mouse's brain tissue, so that different kinds of synapses show up in different colors.
应用推荐