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老人， ろうじん

1. old person, senior citizen, the aged, the elderly

老人

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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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話し相手， 話相手， はなしあいて

1. person with whom to speak, someone to talk to, companion, advisor, adviser

tbd

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必要， 必用， ひつよう

1. necessary, needed, essential, indispensable 2. necessity, need, requirement

必要的，必需的，必不可少的，不可缺少的；必要性，需要，要求

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が

1. indicates the subject of a sentence 2. indicates possession 3. but, however, (and) yet, though, although, while 4. and 5. used after an introductory remark or explanation 6. regardless of ..., whether ... (or not), no matter ... 7. indicates a des...

tbd

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だ

1. be, is

断定助动词，是，是也

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