unsatisfactory

/ˌənsətɪsˈfæktəri/

not giving satisfaction

中文释义：不令人满意的；不够好的

The student's performance was deemed unsatisfactory, so he was required to retake the exam.

该学生的表现被认为不合格，因此他需要重考。

The company received unsatisfactory feedback from customers regarding its after-sales service.

公司收到了客户对其售后服务不满意的反馈。