Matthews says that exposure to soil bacteria may affect human brains too. "It just shows that we evolved with dirt as hunter-gatherers," she says.

马修斯说，接触土壤中的细菌或许也能影响人类的大脑：“这不过显示了我们是从采猎者进化而来，期间不断与泥土打交道。

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Matthews says that exposure to soil bacteria may affect human brains too. "It just shows that we evolved with dirt as hunter-gatherers," she says.

马修斯说，接触土壤中的细菌或许也能影响人类的大脑：“这不过显示了我们是从采猎者进化而来，期间不断与泥土打交道。

youdao