AnalyzerSentence analysis5SpansSentence自然環境を保護しなければならない。1000 character limitAnalyzeSentence自し然ぜん環かん境きょうを保ほ護ごしなければならない。Span Details自し然ぜん環かん境きょうnatural environment; the environmentnounをobject markergrammar保ほ護ごprotection; safeguarding; guardianship; preservation; conservationnoun, suru verbしlight/support verb with a noun or noun-like phrase-> するgrammarなければならない。must; have togrammarAlso 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
