Sentence examples for it is so difficult from inspiring English sources

Due to its complexity, it is so difficult to optimally solve such a problem by using traditional optimization tools.

It is so difficult in the camp.

"And it is so difficult to walk that line.

That is why it is so difficult for the current crop of clerics and scholars.

It is so difficult to keep the headpiece on him and keep the processor attached.

They make clear why it is so difficult to create policy to counter terrorism.

"The problem it is so difficult to carry out a causation analysis," Mr Hennessy said.

No wonder it is so difficult to even stick around even for five years.

And it is for that reason that, also like cancer, it is so difficult to eradicate.

It is so difficult to penetrate, however, that you may end up tasting little but bread.

The S.E.C. has sat on this rule-making because it is so difficult to actually enact.