Sentence examples for but it is difficult from inspiring English sources

But it is difficult to analyze its thermal properties.

But it is difficult to deny its presence.

But it is difficult to identify the complete structures of these IS elements.

But it is difficult for me.

But it is difficult to enforce.

But it is difficult to make predictions.

"But it is difficult to judge.

But it is difficult for strong women.

But it is difficult and slow.

"But it was difficult.

But it's difficult".