它们取代了其他微小生物，并成为了主要海洋食物链的食物来源。
They replaced other minute organisms as a food source in the major marine food chain.
他声明发酵是由于许多微小生物作用的结果。
He proclaimed that fermentation was the result of the action of minute organisms.
他声明发酵是由于许多微小生物作用的结果。
He proclaimed that fermentation was the result of the action of minute organisms.
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