AnalyzerSentence analysis6SpansSentenceまず第一に、安全を確保しなければならない。1000 character limitAnalyzeSentenceまず第だい一いちに、安あん全ぜんを確かく保ほしなければならない。Span Detailsまず第だい一いちに、first of all; to begin with; in the first placeexpression安あん全ぜんsafety; securitynoun, na-adjectiveをobject markergrammar確かく保ほsecure; obtain; ensure; maintain; belay; belayingnoun, 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
