But the practical difficulty of reversing this process would be only half the problem.

In an area variance, you have to show practical difficulty.

But behind the ideal, the practical difficulties are still significant.

Although the theory of the nuclear bomb seemed clear and simple, a great many practical difficulties stood in the way.

Whatever the practical difficulties, the potential gains are too large for us not to try.

We could in theory find them from As only, since, but there is a practical difficulty.

Despite practical difficulties, the idea makes moral and political sense.

This has led to practical difficulties in application, at the level of the political groups.

There are also a few other major practical difficulties, such as social security problems, particularly in the field of health care.

The construction work has never been carried out due to practical difficulties.