他们给出的借口不令人满意。

The excuse they gave was ___unsatisfactory.

这是个好主意，但我认为我需要指出一些我觉得不满意的地方。

It was a great idea, but I think I need to make some points about the things that I found ___unsatisfactory.

餐厅的服务不令人满意。

The service at the restaurant was ___unsatisfactory.