AnalyzerSentence analysis7SpansSentence自然資源の利用は持続可能でなければならない。1000 character limitAnalyzeSentence自し然ぜん資し源げんの利り用ようは持じ続ぞく可か能のうでなければならない。Span Details自し然ぜん資し源げんnatural resourcesnounのpossession, attribution, nominalizer, or nominal linkergrammar利り用ようuse; utilization; applicationnoun, suru verbはtopic markergrammar持じ続ぞく可か能のうsustainablena-adjectiveでcontinuative form of the copulagrammarなければならない。must; have to; need toexpressionAlso Foundならないならないcannot help feeling; unbearably; irresistibly; must not; should not; must; have to; ought to; cannot; unable to; notoptional