1、 They are controlling so much cocoa that they are virtually monopolizing the market.
控制着那么多可可粉，他们实际上是在垄断市场。
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2、 For example, sea stars prey on a variety of bivalve mollusks and prevent these bivalves from monopolizing habitats on the sea floor.
例如，海星捕食各种双壳类软体动物，防止这些双壳类动物独占海底的栖息地。
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