flawed是什么意思？

But the report, he said, "will harm the cause for action on both climate change and disasters because it is so deeply flawed (有瑕疵的).

Clearly, there is no such thing as a "perfect" memory – their extraordinary minds are still using the same flawed tools that the rest of us rely on.

In any event, my mother and her red pen showed me how deeply flawed a flawless essay could be.

Unfortunately, that conclusion puts too much weight on a useful, but flawed and incomplete, statistic.