one time=once吗

one time=once吗 one time=once once=one time吗how often do you exercise I exercise once a week .I exercise one time a week .这一样吗 at one time=at once?at one time=at once 还是 at one time=once?或者是别的 once a week 有one time a week 吗?为什么? once a day=one time a day? one time=once?那one time for your mind是什麼意思 one time=once,two time=twice,three time=? one time和once有什么区别? once等于one time吗?twice=two times吗?就说是不是对的如题 求once同义词一次是a time还是one time 在句子中once 和twice 可以用one time和 two time代替吗?two times 和one time 真的不对吗 在句子中once 和twice 可以用one time和 two time代替吗?望高手可以举例说明, long long ago=Once upon a time吗? once more,one more time和once again有什么区别once moreone more timeonce again都是再一次的意思? 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. Nobody can do two things well __ .A.at one time B.at once C.one time D.Nobody can do two things well __ .A.at one time B.at once C.one time D.onceB正确,但为什么不选A呢?A不也是有“同时”的意思吗? 英语3.Don’t all speak at once!________,please.3.Don’t all speak at once!________,please.a.Each at one time b.One by one time c.One for each time d.One at a time为什么