The aggregation of immense farms under white ownership was a trend at that time.
大规模的农场聚集在白人的所有权之下, 这在当时是一股潮流。
A small mass of tissue or aggregation of cells.
结组织的小结块或细胞的聚集
An aggregation of similar devices, such as transformers or lamps, connected to each other and used cooperatively.
一种由一些相似设备(如转换器、指示灯等)组合而成的聚合体, 这些设备相互连接、协同使用。
