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一日中, 1日中, いちにちじゅう
1. all day long, all the day, throughout the day
整天,一整天,整日
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题;表示与另一选项(无论是否明确提及)形成对比;表示强调