良莠混杂，拼音：liáng yǒu hùn zá，解释：莠：狗尾草。好苗和野草混杂在一起。比喻好人坏人混杂在一起，难以区分。
然而这些资料良莠混杂，情况不容乐观。
However, among these materials, the good and the bad are intermingled.
由于洒水车市场良莠不齐，大大小小生产厂家混杂，在购买洒水车时一定要认准大型厂家。
Due to the good and bad are intermingled of market of sprinkler, large and small manufacturers mixed, must look for when buying sprinkler large manufacturers.
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