斋戒沐浴是一个汉语成语，意思是古人在祭祀或举行典礼前，沐浴更衣，洁身清心，以示虔敬。
从一大早开始，我们的左邻右舍就一个个地来水池斋戒沐浴了。
From early morning our neighbours would drop in one by one to have their bath.
卢生说：“大王，请允我三日，一要斋戒沐浴，二要朝拜仙山，还要置办些珠宝法器，以作见面之礼。”
"Lu said:" the king, please allow me three days, one to fast bath, two to worship the mountains, but also purchase some jewelry instruments used to meet the ceremony.
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