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営業時間， えいぎょうじかん

1. business hours, opening hours, office hours

tbd

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いつまで， 何時まで， 何時迄

1. how long?, till when?

多久？还要多久？

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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

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