英语语法分析

Together these eight companies operated as a mature oligopoly, essentially miming the entire market.

这八家公司共同运作，形成了成熟的寡头垄断格局，实质上是在模仿整个市场。

Therefore, the Beijing residential market structure of monopolistic oligopoly.

因此，北京住宅市场结构的垄断寡头。

Critics of the Canadian Banks reckon that their conservatism was the flip side of a cosy oligopoly.

加拿大银行的评论家猜想，他们的保守主义是友好型供不应求的对立面。