很多人对于腐殖土和腐叶土并不是特别的了解，腐叶土其实就像是烂树叶，里面是没有任何泥土的，一般情况会在树林当中发现有腐烂的树叶，其中表面一层呈现出碎片化，这两层之间的腐叶就被称为是腐叶土。腐殖土的土壤就
Just As title . As least I know array might not be one I want . cus I need to generate a random index before I want to randomly pick up one item from the array . For your opinion.
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