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新宿のナンパ師、ナンパの合間にポカリ飲んでるけど…
→ “This Shinjuku pick-up artist is drinking Pocari Sweat in between his pick-ups...”
新宿 Shinjuku = Shinjuku (proper noun, district in Tokyo)
の no = of / 's (possessive particle)
ナンパ師 nanpa-shi = pick-up artist (noun)
ナンパ nanpa = pick-up
師 shi = master / practitioner
、 = comma (punctuation)
ナンパ nanpa = pick-up (noun)
の no = of / 's (possessive particle)
合間 aima = interval / break / gap (noun)
合 go = meet / join
間 ma = space / interval
に ni = at / during (directional particle)
ポカリ pokari = Pocari (brand name, loanword)
飲ん non = to drink (te-form contraction of nomu)
でる deru = to be doing / continuous aspect (te-iru contraction)
けど kedo = but / though (conjunction/concessive particle)
… = ellipsis (punctuation)