Sentence examples for it is not difficult to perceive from inspiring English sources

"They would be right to do so," he noted, "except that, just as for a clothed figure we first have to draw a naked body beneath and then cover it with clothes, so in painting a nude, the bones and muscles must be arranged first, then covered with appropriate flesh in such a way that it is not difficult to perceive the positions of the muscles".

But it isn't difficult.

It isn't difficult.

It's not difficult".

It wasn't difficult.

This suggests that even if access is not difficult, it is perceived as such.

The employment contract was not well defined and it is difficult to perceive whether individuals were acting as an expert member of staff or volunteer.

Third, weights are symmetric: the benefit perceived by entity A in being combined with entity B is the same as the one perceived by B in being combined with A. Satisfying these assumptions is not difficult.

Luckily, this is not difficult".

Technologically this is not difficult.

The math is not difficult.