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トピずれ

1. off topic

tbd

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すみません， 済みません

1. excuse me, pardon me, I'm sorry, I beg your pardon 2. thank you, you shouldn't have, it's too much

对不起，劳驾，不好意思，请原谅；谢谢！费心了！

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です

1. be, is

断定助动词，是，是也

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