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高校のころ、別になんとも思ってなかった女の子が海を見て…
→ “Back in high school, there was this girl I didn't really think much of... and then she looked at the sea...”
高校 kō¹kō¹ = high school (noun)
の no = of / 's (possessive particle)
ころ koro = time / period (noun)
、 = comma (punctuation)
別に betsu ni = particularly / especially (adverbial phrase)
なんとも nanto mo = anything at all / nothing in particular (adverbial phrase)
思っ omo = think (v. stem)
て te = and / while (conjunction)
なかっ nakat = not be (negative past stem)
た ta = past tense marker
女 onna = woman / female (noun)
の子 no ko = child / girl (noun + possessive)
が ga = subject marker particle
海 umi = sea / ocean (noun)
を o = object marker particle
見て mite = look at / see (v. te-form)
… = ellipsis (punctuation)
