dreamer

1. N-COUNT If you describe someone as a dreamer, you mean that they spend a lot of time thinking about and planning for things that they would like to happen but which are improbable or impractical. 空想家; 不切實際的人

Far from being a dreamer, she's a level-headed pragmatist. 她是個冷靜理智的實用主義者，遠非一個空想家。