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昔， むかし

1. the old days, the past, former times, a long time ago 2. the past ten years, the past decade

从前，很久以前；过去十年，过去的十年

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いざ知らず， いざしらず

1. I don't know about ... but, it may be possible for ... but

tbd

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ある， 有る， 在る

1. to be, to exist, to live 2. to have 3. to be located 4. to be equipped with 5. to happen, to come about

有，存在；有，拥有；发生；位于；配备

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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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も

1. too, also, in addition, as well, (not) either (in a negative sentence) 2. both A and B, A as well as B, neither A nor B (in a negative sentence) 3. even, as much as, as many as, as far as, as long as, no less than, no fewer than 4. even if, even t...

tbd

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