scarlet R stain

例句：

1. 1.The scarlet stain on the wall is a result of the accident.
   墙上的血渍是那次事故的结果。
2. 2. The artist applied the scarlet stain to the canvas to create a unique effect.
   艺术家在画布上施加猩红色染料以创造独特的效果。
3. 3.The stain on the tablecloth was caused by the spilled red wine.
   桌布上的污渍是由洒落的红酒造成的。