If that's so, theory predicts that thousands of dark matter clumps should surround the Milky Way, each holding a small satellite galaxy.

如果真的如此，根据理论预测，银河系的周围应该环绕着成千上万的暗物质团簇，每个都含有一个小的卫星星系。

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They will be widely viewed as a referendum on the prevailing theory in Alzheimer's drug development, which focuses on sticky clumps of protein known as beta amyloid that build up in the brain.

WSJ: For Alzheimer's, a Fork in the Road