AnalyzerSentence analysis6SpansSentence心臓がどくんと鳴った。1000 character limitAnalyzeSentence心しん臓ぞうがどくんと鳴なった。Span Details心しん臓ぞうheart (organ); guts; nerve; cheek; gall; heart (of something); central partnounがsubject markergrammarどくんheavy heartbeat; thumping; poundingadverb, nounとquotation, conditional, companion, or and markergrammar鳴なっsound; ring; echo; roar; rumble-> 鳴るgodan verbた。past tense or completed actiongrammar