Other times it had a really hard time focusing on a subject, regardless of how near or far away it was. (pocket-lint.com)
I have a really hard time focusing when there are people talking and all this talking, especially when it seems pointless to me, really gets on my nerves. (myintimcity.com)
If we go to the park and if she is anticipating a play / training session she has a much harder time focusing on not pulling in sheer anticipation of the fun. (whole-dog-journal.com)