AnalyzerSentence analysis8SpansSentence河川工学は洪水対策に欠かせない分野だ。1000 character limitAnalyzeSentence河か川せん工こう学がくは洪こう水ずい対たい策さくに欠かかせない分ぶん野やだ。Span Details河か川せん工こう学がくriver engineeringnounはtopic markergrammar洪こう水ずいflood; floodingnoun対たい策さくcountermeasure; measure; stepnounにdirection, time, indirect object, or target markergrammar欠かかせないindispensable; essential; vital; crucialexpression, i-adjective分ぶん野やfield; area; domain; branchnounだ。plain copulagrammar
