Even an imperfect system would be better than nothing if an enemy threatens the nation with nuclear missiles, they argue.

The complex system may be subdivided into perfect and imperfect systems.

Putting out fires is part of an imperfect system.

In any case, placement tests are "an imperfect system" for matching students with course content, he says.

But there is an obligation not to replace imperfect systems with worse ones.

"I also told you it would be an imperfect system without the proper frequencies," Barrett said.

Well, anyway, the least I can do now is face this imperfect system of justice we've created.

It is not as if local governments choose antiquated and imperfect systems out of principle.

As a result, the already imperfect cross-subsidy system is unwinding.

It is important that we make maximum use of the reserves still left in the current imperfect system.