I sneaked away to the bathroom so I could study for 30 minutes.
I ditched work for half an hour while I studied in the bathroom.
ーI sneaked away to the bathroom so I could study for 30 minutes.
「30分間勉強するのに、トイレに抜け出した」
to sneak away で「抜け出す・こっそり離れる」
ーI ditched work for half an hour while I studied in the bathroom.
「トイレで勉強する間、30分間仕事をサボった」
to ditch で「サボる」
ご参考まで!