notadictionary.com
さっき1人でレジ締めしてたら向かいのドーナツ屋のお姉さんが…
→ “I was just closing the register by myself when the older lady from the donut shop across the way...”
さっき sakki = just now (adverb)
1人 hitori = one person (noun phrase)
1 ichi = one
人 nin = person
で de = by means of / with (particle)
レジ reji = cash register (loanword)
締め shime = closing / settlement (noun)
締 shi = tighten / close
め me = finish / end
してたら shitetara = while doing / if I was doing (conditional form of 'to do')
し shi = do
て te = connecting particle
たら tara = if / when (conditional)
向かい mukai = opposite / across (noun/adjective)
向 mu = face / direction
かい kai = counter / opposite
の no = of / possessive (particle)
ドーナツ dōn¹atsu = donut (loanword)
屋 ya = shop / store (suffix)
の no = of / possessive (particle)
お姉さん oneesan = older sister / lady (honorific noun)
お o = honorific prefix
姉 ane = older sister
さん san = Mr./Ms./Mrs. (honorific suffix)
が ga = subject marker (particle)
… = ellipsis (indicates a pause or unfinished thought)
