all over again, over againadvadverb: Describes a verb, adjective, adverb, or clause--for example, "come quickly," "very rare," "happening now," "fall down."
(once more, from the beginning)
再一次 zài yí cì
又一次 yòu yí cì
Oh no! I forgot the cake was in the oven and now it's burnt; I'll have to do it over again.