sienna

• 一种由氧化铁构成的土色，常用作颜料；也指这种颜料本身。

A noun referring to an earth color containing ferric oxides, commonly used as a pigment.

不可数

1. B2formalart

   A natural earth pigment containing iron oxide and manganese oxide, used in painting and coloring.

   赭石颜料

   • The artist used raw sienna to create warm tones in the landscape.
   • Sienna is often mixed with other pigments to achieve different shades.
   • The old frescoes still show traces of sienna pigment.

2. B2formalart

   A reddish-brown or yellowish-brown color resembling the pigment.

   赭色

   • The walls were painted a warm sienna color.
   • Her dress was a beautiful shade of burnt sienna.
   • The sunset had deep sienna hues across the horizon.