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そういえば昼に中華料理屋入ったら…
→ “Speaking of which, when I walked into a Chinese restaurant during the day...”
そういえば sō¹ ieba = speaking of which (conversational connector used to bring up a related topic)
昼 hiru = daytime / noon (noun)
に ni = at / in (location particle indicating time or place)
中華 chū¹ka = Chinese (adjective/noun referring to China)
中 chū¹ = middle / center
華 ka = flower / splendor
料理 ryōr¹i = cooking / cuisine / dish (noun)
料 ryō¹ = material / ingredient
理 ri = principle / reason
屋 ya = shop / store / establishment (suffix for small businesses)
入っ haitt- = entered / went into (past tense colloquial form of 'hairu')
たら tara = when... happened / if... (conditional/past conditional marker)
