过一天算一天
with no thoughts or plans for the future
They live from day to day, looking after their sick daughter.他们过一天算一天,日复一日地照顾着生病的女儿。
天天,一天又一天(指经常变化)
if a situation changes from day to day, it changes often
A baby's need for food can vary from day to day.婴儿对食物的需要天天都在变化。
释义来自《牛津高阶英汉双解词典》第 9 版