Though discovered some time ago, the precise purpose of this valve is still under discussion.

Defining precise purposes in this way clearly involves some degree of prior background knowledge on the child's part.

Try to avoid jargon words unless they have a precise purpose in your writing.

The program was further weakened for lack of a precise purpose.

What precise purpose this ivory horn or lance answers, it would be hard to say.

But such a visit hardly needs a precise purpose to be fruitful.

"And I imagine she assigned you to come with me for the precise purpose of distracting my attention while all this was going on."

Their precise purpose is not clear and they do not connect with the entrance.

The precise purposes of the proposed fund have still to be fully worked out.

He was here for a very particular and precise purpose.