aggregate: vt.1.集合，(使)聚集。2.总计，共计，合计。短语和例子The sum will aggregate a thousand dollars. 总额共计一千元。adj.1.聚合的；(花)聚生的。2.【地质学；地理学】聚成岩的。3.合计的，总。短语和例子an aggregate flower 聚生花。n.1.聚集，集合。2.总数。3.聚集体；凝聚体；团粒。4.【建筑】混凝料
Where species form apomictic clones that are very difficult to distinguish from each other , they are termed aggregate species , e . g . bramble ( rubus fruticosus agg . ) 从单性生殖系产生的物种极为相似，几乎无法分辨，这被称为复合种。
