Task: Translation
Input (Chinese): 然而，在过去的100亿次小扰动中，有很大一部分重子消失了，这些重子通常被称为“普通物质”，目的是为了将它们与暗物质和暗能量区分开。
Output (English): However, sometime during the last 10 billion years a large fraction of the baryons, commonly referred to as "ordinary matter" to distinguish them from dark matter and dark energy, have gone missing.