Paroxysms of crying and unhappiness develop at roughly the same time of day or night and continue for hours for no apparent reason.
哭闹和不快大致发生在白天或夜晚的同一时间并持续数小时，但并没有明显的原因。
That child is always crying for no good reason.
那个孩子总是无缘无故地哭。
Last night, I began crying so sadly for no reason, really felt that I was in a street which had no end.
昨晚莫名其妙哭得如此伤心，真真切切感到自己走上了一条不归路。
Last night, I began crying so sadly for no reason, really felt that I was in a street which had no end.
昨晚莫名其妙哭得如此伤心，真真切切感到自己走上了一条不归路。
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