He took a bath while I was preparing dinner.
我准备晚餐的时候他在洗澡。
Mom was preparing dinner in the kitchen while Dad was watching TV.
妈妈在做饭，而爸爸在看电视。
Mother was preparing dinner in the kitchen while Father was watching TV.
妈妈在做饭，而爸爸在看电视。
Mother was preparing dinner in the kitchen while Father was watching TV.
妈妈在妈妈在做饭，而爸爸在看电视。
Mother was preparing dinner in the kitchen while Father was watching TV.
妈妈在妈妈在做饭，而爸爸在看电视。
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