item mark

例句：

1. 1. The item mark on the box indicates that it contains a special ingredient.
   盒子上的项目标记表明它含有一种特殊的成分。
2. 2. The company's logo is an item mark that helps customers identify their products.
   公司的商标是项目标记，帮助顾客识别他们的产品。
3. 3. The item mark on the receipt is for the purchase of the new laptop.
   收据上的项目标记是为了购买新笔记本电脑的。