There seemed to be only one, expression in the language everybody spoke: "All clear!"

That was what he said, but his expression spoke otherwise.

The shocked expression on his face when he saw her spoke volumes.

The stunned expressions on their faces spoke louder than words.

Gwen didn't say anything, but the expression on her face spoke volumes.

I wouldn't beg, but my expression must have spoken for me.

His expression spoke volumes about what he thought of facts.

The marines looked at each other and said nothing, though their expressions spoke volumes.

The Chief's expression spoke volumes about what he thought of that.

I was, as I believe the expression is, speaking out of my turn.