1.   Aside from its dubious cultural charm, there are serious structural weaknesses which May one day embarrass us.

2.   The car has some serious structural weaknesses.

3.   The only serious weakness is the radio system.

4.   The program has serious weaknesses, and I would avoid using it.

5.   This highlights a serious weakness in his philosophy.

6.   This is a serious weakness for causal analysis using any of these explanatory approaches.

7.   We saw that this theory has serious weaknesses in terms of lacking supporting evidence and analytical strength.

8.   This is a serious weakness in an approach intended to aid understanding of religion.