YOU SAID:
He unlocked and opened it, slowly looking over the contents.
INTO JAPANESE
彼は鍵を開けて開け、ゆっくりと中身を眺めた。
BACK INTO ENGLISH
He unlocked it and slowly looked inside.
INTO JAPANESE
彼は鍵を開け、ゆっくりと中を覗いた。
BACK INTO ENGLISH
He unlocked it and slowly looked inside.
That didn't even make that much sense in English.