How to say the police carefully investigated the cause of the accident. in Japanese
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警察警察(keisatsu) (n,adj-no) policeはは(ha) (int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sigh事故事故(jiko) (ok) accident/incident/trouble/circumstances/reasons原因原因(gen in) (n,vs) cause/origin/sourceをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,入念入念(nyuunen) (adj-na,n) careful/elaborate/scrupulousにに(ni) (prt) indicates such things as location of person or thing, location of short-term action, etc.調査調査(chousa) (n,vs) investigation/examination/inquiry/enquiry/surveyしたした(shita) (n) did/a past form of the previous verb/tongue/tongue-like object/clapper/talon。。(。) Japanese period "."
