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Sentence analysis
8Spans
Sentence
Span Details
再帰反射
retroreflectionnoun
素材
ingredient; raw material; resource; unprocessed timber; raw timber; subject matter; topicnoun
は
topic markergrammar
夜間
night; nighttimenoun, adverb
の
possession, attribution, nominalizer, or nominal linkergrammar
交通安全
traffic safety; road safetynoun
に
direction, time, indirect object, or target markergrammar
役立つ。
be useful; be helpful; serve the purposegodan verb