yard brown stain

例句：

1. 1.The old house has a lot of yard brown stains on the walls.
   这所旧房子的墙上有很多院子褐色的污渍。
2. 2.The stain on his shirt is a result of a yard brown stain from the rain.
   他衬衫上的污渍是雨水造成的院子褐色污渍的结果。
3. 3. The stain on the table is a result of a yard brown stain from the coffee spilled on it.
   桌子上的污渍是咖啡洒在上面后留下的院子褐色污渍的结果。