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Sentence analysis
7Spans
Sentence
Span Details
第一
first; number one; most important; best; foremost; first of all; to begin with; above allno-adjective, noun, adverb
に、
direction, time, indirect object, or target markergrammar
安全
safety; securitynoun, na-adjective
を
object markergrammar
確保
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 togrammar