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世の中， よのなか

1. society, the world, the times

社会、世界、时代

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持ちつ持たれつ， もちつもたれつ

1. helping each other, supporting each other, mutual cooperation, give and take, reciprocity, interdependence

互帮互助、相互支持、相互合作、有得有失、互惠互利、相互依存

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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

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だ

1. be, is

断定助动词，是，是也

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