AnalyzerSentence analysis7SpansSentence高校数学で虚数を初めて学ぶ。1000 character limitAnalyzeSentence高こう校こう数すう学がくで虚きょ数すうを初はじめて学まなぶ。Span Details高こう校こうsenior high school; high schoolnoun数すう学がくmathematicsnounでlocation, means, or scope markergrammar虚きょ数すうimaginary numbernounをobject markergrammar初はじめてfor the first time; only after ...; not until ...; first time; one's firstadverb, no-adjective, noun学まなぶ。learn; study; take lessons ingodan verb