If you describe something as unsatisfactory, you mean that it is not as good as it should be, and cannot be considered acceptable.
例句
The inspectors said just under a third of lessons were unsatisfactory...督察员说只有不到1/3的课程不够好。He asked a few more questions, to which he received unsatisfactory answers.他又问了几个问题,得到的答案都不令人满意。
英汉词典释义
adj.
使人不满意的
Shops are often reluctant to take back unsatisfactory goods.商店一般都不愿收回顾客不称心的货物。The student’s work was judged unsatisfactory.这个学生的作业被认为是不能令人满意的。
英英词典释义
Adjective
1. not giving satisfaction;
"shops should take back unsatisfactory goods""her performance proved to be unsatisfactory""life is becoming increasingly unsatifactory""our discussion was very unsatisfactory"