One day at shore,ten years at sea!

One day ashore,ten years at 是at about ten years 还是for about ten years "live one day at a sea 和at the sea at sea.at the,sea呢? He ______(study) at that school ten years ago. His uncle has lived at ________ for ten years. After ten years of half work ,they at last got About ten years ago when I was at Unviersity at my ten years old这句话有没有错? take one day at a time是什么? one day at a time的意思