We will keep in touch with them.

We are in close touch with them.

I would like to touch briefly on these amendments.

Let me touch briefly on those two matters.

I would also like to touch on a personal, political consideration.

Internet users trace child pornography.

Our task is to detect, trace, freeze, seize and confiscate the proceeds of organised crime.

The globalisation of world trade makes arms cheaper, more readily available and more difficult to trace.

The crucial factor is that it should be possible to trace with certainty the origins of what we eat.

If something happens to me, it should be possible to trace me immediately.