We see brown rather than, for instance, burnt umber.
我们看到的是棕色,而不是深褐色。
英语百科
Umber
(重定向自Burnt Umber)
Umber is a natural brown or reddish-brown earth pigment that contains iron oxide and manganese oxide. It is darker than the other similar earth pigments, ochre and sienna.
In its natural form, it is called raw umber. When heated (calcinated), the color becomes more intense, and the color is known as burnt umber.