AnalyzerSentence analysis4SpansSentence研究に没頭する。1000 character limitAnalyzeSentence研けん究きゅうに没ぼっ頭とうする。Span Details研けん究きゅうresearch; study; investigationnoun, suru verbにdirection, time, indirect object, or target markergrammar没ぼっ頭とうimmerse oneself in; be absorbed in; devote oneself tonoun, suru verbする。light/support verb with a noun or noun-like phrasegrammar