Cuprous acetylide takes the form of a russet or reddish-brown powder, insoluble in water and in the majority of organic solvents . 乙炔亚铜是黄褐色的红棕色的粉末，不溶于水和大多数有机溶剂。
in vegetation, acute injury by often results in an ivory coloration, but sometimes the coloration is reddish brown. 在植物方面，因二氧化硫严重损伤经常导致象牙色，但有时为红棕色。
Having a reddish - brown color 狐色的有红棕色的
Red brownish forest soil 红棕色森林土壤
Red brown step soils 红棕色草原土
Red and brown pieces 红棕色块状
Appearance white to light yellow flakes . it is allowed to become brown color in storage 外观白色至浅黄色片状，储存时允许变为红棕色。
Any of a breed of characteristically large , reddish - brown or chestnut - colored draft horses 役马，拖车马一种以红棕色或栗色为特征的大型载重马
Opal is a strikingly beautiful gemstone available in two distinct types , common and precious 火蛋白石是一种呈红棕色、橘黄色反光的蛋白石。
