商店里经常会有神秘购物。据说这是调查公司和监管机构的常用途经。

我们来看一段相关的英文报道

Mystery shopping is a tool used externally by market research companies, watchdog organizations, or internally by companies themselves to measure quality of service, or compliance with regulation, or to gather specific information about products and services.

The mystery consumer's specific identity and purpose is generally not known by the establishment being evaluated.

Mystery shoppers perform specific tasks such as purchasing a product, asking questions, registering complaints or behaving in a certain way, and then provide detailed reports or feedback about their experiences.

神秘购物是市场调查公司和监管机构的外部调查工具，也可以由公司作为内部调查使用，以衡量服务质量、是否遵守规则，或作收集产品和服务的特定信息之用。

被评估的机构一般不知晓神秘顾客的特定身份和目的。

神秘顾客的特殊任务包括：采购商品、询问问题、以特定方式记录投诉或者某些行为，之后对他们的体验提交详细报告或反馈。



【讲解】

文中的mystery shopping就是“神秘购物”的意思，其中mystery用作名词，意为“谜，神秘”，如：His past is enveloped in a shroud of mystery.（他过去的经历笼罩着神秘气氛。）

第三段中的feedback用作名词，意为“反馈；反馈意见”，常见的词汇搭配如：feedback on（关于…的反馈）、negative feedback（消极反馈）等。