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衛生， えいせい

1. hygiene, sanitation, health

tbd

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監視， かんし

1. monitoring, watching, observation, surveillance, guarding, supervision, lookout

tbd

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員， いん

1. member

tbd

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である

1. be, is

是、=です、=だ

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彼， かれ

1. he, him 2. boyfriend

他

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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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