最近研究人员提出了很多模拟真实网络演化生长的理论模型，其中一部分模型是从网络聚集生长出发的。
Recently, researchers have reported a lot of imitating real network evoluting growth model, in which a part of them are based on network aggregation growth.
自由基(极具化学反应性的含氧分子)的聚集，至少在某种程度上，使恶性肿瘤的生长如同加了燃料一般。
The growth of cancerous tumors is fueled, at least in part, by the buildup of free radicals-highly reactive oxygen-containing molecules.
依靠阳光生长的海藻和珊瑚聚集在沉船上。
Seaweeds and corals, which need light to grow, colonise them.
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