AnalyzerSentence analysis7SpansSentence弾道学の知識は犯罪捜査に役立つ。1000 character limitAnalyzeSentence弾だん道どう学がくの知ち識しきは犯はん罪ざい捜そう査さに役やく立だつ。Span Details弾だん道どう学がくballisticsnoun, no-adjectiveのpossession, attribution, nominalizer, or nominal linkergrammar知ち識しきknowledge; informationnounはtopic markergrammar犯はん罪ざい捜そう査さcriminal investigationnounにdirection, time, indirect object, or target markergrammar役やく立だつ。be useful; be helpful; serve the purposegodan verb