棕褐色

His teeth were a gleaming flash of white against his tan.

他牙齿在他棕皮肤映衬下白得发亮。

In lamina of shale which deposited in deep lake away from paleo-debouchment in the Shahejie Formation in the Jiyang Depression, some aeolian silty sand was discovered.

该油岩呈深灰或棕 ,理发育 ,主要由富含有机质层和浅灰钙质层形成级沉积层偶组成。