I'm looking for some clarification on this - I read this as the card can, in the OP's example, be used twice total within a game, and both of those times can be within the same turn. This would also explain why the cards that can be activated twice are often cheaper than the cards that can be activated once per turn.
Is this correct?
Page 9, right hand column, Note:
"You can only use an action on a card once per round unless the text says otherwise. If it can be used more than once, you can choose to activate it all at once or on different turns."