young blood
new blood

But we must eventually have new blood in the Order.

Maybe we could do with some new blood around here.

But some old friends would like to see new blood.

If one wants new blood, office space must be made for the old.

He was right: the new blood had not made a difference.

The guy who started it is getting on, and it's time for new blood.

The single trade union was also very important as a source of new blood for the military.

It was as though new blood had run into the city.

We're going to try some new blood in a few minutes.

Other people say the new blood is more than welcome.