Cách sử dụng
The word "stain" is typically used to describe a mark left on something after it has come into contact with a substance that has caused discoloration. For example, if you accidentally spilled coffee on your shirt, the brown mark left behind would be considered a stain. Similarly, if you have a white carpet and someone accidentally tracks mud onto it, the mud mark left behind would be a stain. Stains can also refer to the substance causing the discoloration, such as a wine stain or blood stain. The word "stain" can be used in a variety of contexts, including discussing laundry, cleaning, and home maintenance.