We'll have to concentrate on important business during the next three weeks.

We just have to keep working at concentrating during those times.

They'll concentrate on their own material during this early set.

You may be less tired and more able to concentrate during the day.

They concentrated on other musical projects during 2003 to 2006.

But the best is to concentrate all my attention during a single period.

It has been up for more than three minutes, and they undoubtedly concentrated everything possible upon us during that time.

You truly only need to concentrate for about a 10-second span before and during the shot.

It is concentrated during summer months and can be unreliable.

He had concentrated on various theatrical projects during that period.