Both are truly necessary if a progressive teaching environment is to be maintained.

Let your pediatrician know you're fine with not getting antibiotics unless it's truly necessary.

"Better this than for your patrol to have been truly necessary."

"Was it truly necessary to commit so many of our most important vessels to the task?"

Odo wondered if such measures were truly necessary, but he did not say anything.

Thus, data acquisition should be applied only when truly necessary.

Most environmental groups signed on to the project early, although a few question whether so complicated and untested a plan is truly necessary.

Patients shouldn't be afraid to ask their doctor if a test is truly necessary, he says.

It was a comforting idea, but not truly necessary to survival.

Within the space of one week, you produced a detailed plan with proposals which are both practical and also truly necessary.