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Sentence
Span Details
先生、
teacher; instructor; master; sensei; title of respect; (teasing) sir; (joking) master; one's eldernoun, noun suffix
ちょっと
a little; a bit; slightly; for a moment; briefly; just a minute; somewhat; rather; pretty; quite; (not) easily; (not) readily; hey!; excuse me; come on; thanks, but no; not feasible; not possible-> 一寸adverb, interjection, expression
頭が痛い
have a headache; worrying; troubling; racking one's brainsexpression, i-adjective
んです。
explanatory emphasis-> のだ/んだgrammar