赠品，是商家附送的一种附带品，一般会捆绑正规商品出售，或商品销售后送出。商家虽然标称赠品是免费纪念品，但事实上是用于做广告宣传或次品推销，顾客会将此当作成本加入捆绑商品的价值中。
A gift is an accessory given by a merchant. It is usually bundled with regular goods for sale, or given away after the goods are sold. Although the merchant claims that the gift is a free souvenir, in fact it is used for advertising or promotion of inferior products. Customers will regard this as a cost and add it to the value of the bundled goods.
打折就是在原来售价的基础上降价销售，几折则表示实际售价占原来售价的成数。注意：10%就是一成，也就是一折，所以八折，就意味着实际售价是原来售价的80%。
A discount is a sale at a reduced price based on the original selling price. The discount indicates the percentage of the actual selling price to the original selling price. Note: 10% of the original selling price, which is 90% off; so 20% off means that the actual selling price is 80% of the original selling price.
性价比是商品的性能值与价格值比，是反映物品的可买程度的一种量化的计量方式。性价比全称是性能价格比，是一个性能与价格之间的比例关系，具体公式：性价比=性能/价格。
Cost-effectiveness is the ratio of the performance value of a commodity to its price value. It is a quantitative measurement method that reflects the degree of purchase of an item. The full name of cost-effectiveness is performance-price ratio, which is a proportional relationship between performance and price. The specific formula is: cost-effectiveness = performance/price.
质量检验，简称“质检”，亦称“技术检验”。采用一定检验测试手段和检查方法测定产品的质量特性，并把测定结果同规定的质量标准作比较，从而对产品或一批产品作出合格或不合格判断的质量管理方法。其目的在于，保证不合格的原材料不投产，不合格的零件不转下工序，不合格的产品不出厂；并收集和积累反映质量状况的数据资料，为测定和分析工序能力，监督工艺过程，改进质量提供信息。
Quality inspection, referred to as “quality inspection”, is also called “technical inspection”. It is a quality management method that uses certain inspection and testing means and inspection methods to determine the quality characteristics of products, and compares the results with the specified quality standards, so as to make qualified or unqualified judgments on products or batches of products.
网络红人（英语：Internet celebrity），又称为网络名人、网络明星，简称网红（influencer、Key Opinion Leader (KOL)），是指因网络而出名的人物，或者是透过经营社交网站或影音网站提升自己的知名度，并且以此为业的人物。互联网使得人们可以与世界各地的观众接触，并因此在一至数个虚拟社群中累积知名度并获得名声。网络红人因此而声名大噪的现象称为网络爆红。
Internet celebrities, also known as Internet stars, refer to people who are famous on the Internet, or people who increase their popularity through operating social networking sites or video sites and make a living from it. The Internet allows people to reach audiences around the world, and thus accumulate popularity and fame in one or more virtual communities. The phenomenon of Internet celebrities becoming famous as a result is called Internet fame.