in theory片語KK [ɪn ˋθɪri] /ɪn ˈθɪɹi/發音片語1理論上、按理說常暗示與實際不符In theory, the new system should save us hours every week.理論上,新系統每週能為我們省下好幾個小時。2從理論上講、在理論方面與實踐相對The method works in theory but has never been tested in practice.這個方法從理論上講可行,卻從未在實際中驗證過。