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には
1. to, for, on, in, at
2. in order to, for
3. as for, regarding
4. while it is (was) the case that ..., indeed ... (but), certainly ... (but)
tbd
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誰一人, 誰ひとり, だれ一人, だれひとり
1. (not) anyone, (not) a single person, no one, nobody
tbd