once a day=one time a day?

once a day=one time a day? one time=once one time=once吗 Once upon a time there lived a king.One day,the king some of his servants to dig求原文Once upon a time there lived a king.One day,the king some of his servants to dig求原文 once upon a time there lived an old man.He had three sons .One day ,he called them together and 求once同义词一次是a time还是one time once=one time吗how often do you exercise I exercise once a week .I exercise one time a week .这一样吗 once a week 有one time a week 吗?为什么? one day at a time什么意思 take one day at a time是什么? Once upon a time there lived a king.One day,the king .odered some of his servants to dig a pond at one time=at once?at one time=at once 还是 at one time=once?或者是别的 Time one day once a day Once Upon a day Don't all speak at once!___,please.A.Each at one time B.Ono by one time C.One for each time D.One at a time. one time=once?那one time for your mind是什麼意思 once,twice,thrice a week 能不能变成one time,two times ,three time a week