It is stated that it does not translate properly into any Earth language.

We're not even sure, since they transmitted directly into the receiver computers, that they spoke an Earth language.

They called it dL6jl vu, which meant "already seen" in one of their Earth languages.

"That has twenty-six Old Earth languages plus all the major literature."

He didn't speak a single Earth language: he saw himself stranded.

Earth language also has a lot of cliches: I have to use them of course but they're senseless, too.

And now they are being put back into Earth language.

We had cubic yards of Earth languages and materials for instruction.

He can pick up an Earth language just listening to it for a couple of hours.

Even though she still could read and write in her Earth languages, they were of little use here except to make memos to herself.