However, the line is blurred when safety issues are involved.

In reality, the lines between these three systems are often blurred.

The lines among these levels of response are sometimes blurred.

But the line between public and private is still blurred.

At this point, the line between the participant and art work would become blurred.

If a home becomes a small business when you pay someone to be in it, the lines get blurred.

Yet when it comes to contemporary art from outside the Western world, the lines are far more blurred.

The lines between college and professional teams have never been more blurred.

From my point of view, the line between its two elements is blurred.

The lines are blurred though, because it's a book adults should read too.