The last thing I want is the blood of an alien race on my hands.

We can't allow ourselves to become involved with an alien race.

Who could begin to guess at the mental structure of an alien race?

Gradually she was learning the ways of an alien race.

"This is the last time I allow an alien race to draft me into their army with you around!"

She's a member of an alien race with highly advanced technology!

I had used an ability that was given to me by an alien race.

It is not easy for a member of an alien race.

No drop of German blood was to be lost or left behind for an alien race.

And it's not as if they an alien race brought in to rule over us is it.