AnalyzerSentence analysis5SpansSentence蚯蚓は土壌改良に役立つ。1000 character limitAnalyzeSentence蚯蚓みみずは土ど壌じょう改かい良りょうに役やく立だつ。Span Details蚯蚓みみずearthwormnounはtopic markergrammar土ど壌じょう改かい良りょうsoil improvement; soil ameliorationnounにdirection, time, indirect object, or target markergrammar役やく立だつ。be useful; be helpful; serve the purposegodan verb
