这是一件衣服英语是 "this is a piece of clothing"。
"Clothing" 是英语中的常用词，来源于古英语"clæð"，意思是"衣服"。
例句1: "This is a beautiful piece of clothing." (这是一件很漂亮的衣服。)
例句2: "I need to buy some new pieces of clothing for the winter." (我需要为冬天买一些新衣服。)
例句3: "The store has a wide selection of clothing for both men and women." (这家商店有男女装的广泛选择。)