So you have a periphery and a center which contains about 75 percent of all the players, and in the center there's this tiny but dominant core which is made up of highly interconnected companies.
网络由外围和中心两部分组成， 其中中心包含了75%的公司， 而且，中心还存在着微小却至关重要的核心， 这个核心是由联系高度紧密的公司所组成的。