AnalyzerSentence analysis4SpansSentence青春はあっという間に過ぎ行く。1000 character limitAnalyzeSentence青せい春しゅんはあっという間まに過すぎ行ゆく。Span Details青せい春しゅんyouth; adolescence; springtime of lifenounはtopic markergrammarあっという間まにin an instant; in a flash; in no time at allexpression, adverb過すぎ行ゆく。pass by; go past; elapsegodan verb