它已经被打扫了。
The room looks nice. It has been cleaned.
这屋子看起来不错。它已经被打扫了。
The room looks nice, it has been cleaned.
房间看起来真干净，它已经被打扫过了。
它刚被打扫过。
Due to many reasons, it has not been researched and cleaned up to this day.
由于种种原因，《慧苑音义》作为一部佛经音义，迄今为止，尚无人全面系统的研究整理过。
Due to many reasons, it has not been researched and cleaned up to this day.
由于种种原因，《慧苑音义》作为一部佛经音义，迄今为止，尚无人全面系统的研究整理过。
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