"Since the time when the Lunarians became an advanced race."

"An advanced race such as mine could do no less."

"How could you, an advanced race, possibly have made your technology readily available to people who clearly weren't ready for it?"

The plot concerns an advanced race which has developed within the Earth's core.

I suspect it was some advanced race, now long gone.

Your sensors can continue to seek out the location of this advanced race.

We are an advanced race, above the violence of our ancestors.

We are a very advanced race, with power such as you do not yet dream of.

All I had to do was ask why any advanced race would put an instrument here.

A highly advanced race, but very haughty, looking down on everyone else.