立彬の日本語
警察は彼の過去と経歴を調べた。
tbd
The police looked into his past record.
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警察， けいさつ
1. police
2. police officer
3. police station
4. self-appointed enforcer (of a rule, standard, etc.), busybody, vigilante, gatekeeper
警察；警官
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過去， かこ
1. the past, bygone days
2. one's past (that one would prefer remained secret)
3. past (tense), preterit, preterite
4. previous life
过去
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経歴， けいれき
1. personal history, background, career
tbd
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を
1. indicates direct object of action
2. indicates subject of causative expression
3. indicates an area traversed
4. indicates time (period) over which action takes place
5. indicates point of departure or separation of action
6. indicates object of d...
表示动作的直接对象；表示经过的场所；表示离开或分开的点
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調べる， しらべる
1. to examine, to look up, to investigate, to check up, to sense, to study, to inquire, to search
查，检查，查阅，调查
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
と
1. if, when
2. and
3. with
4. used for quoting (thoughts, speech, etc.)
5. promoted pawn
6. indicates a question
表示引用
