People usually complain about what? This question can be answered by common complaint themes in daily life. These complaints may involve personal life, work environment, social issues, service quality, and many other aspects.

人们通常抱怨什么？这个问题可以从日常生活中常见的抱怨主题来回答。这些抱怨可能涉及个人生活、工作环境、社会问题、服务质量等多个方面。