The dollar ended mixed against primary foreign currencies in thin trading.

The game has witnessed a devaluation of the primary currency (gold).

However, in the manga, the Academy uses yen as their primary currency.

In Tokyo's money markets, the dollar opened lower against all primary currencies this morning.

The dollar was lower in slow trading against most primary currencies except the yen.

The dollar was lower yesterday against most primary currencies except the Japanese yen.

Tickets are also the primary currency of the Auction House.

"Scientific credibility is the primary currency that drives the thing I'm working on."

The dollar fell against primary foreign currencies on concern about interest rates.

That could make the dollar less attractive to foreign investors relative to other primary currencies.