灰褐色

měi zhōu hàn tǎ kàn qǐ lai xiàng zhǎng zhe nóng mì de huī hè sè máo de hé lí

美洲旱獭看起来像长着浓密的灰褐色毛的河狸。

A ground hog looks like a beaver with thick, brownish-gray hair.

jiān yù de qiáng bì shì huī hè sè de

监狱的墙壁是灰褐色的。

The walls of the prison are drab.