Pure water is neutral with a pH of 7.

纯净水是中性的，PH值为7。

《柯林斯英汉双解大词典》

The new catalyst works at room temperature, in neutral pH water, and is easy to set up, Nocera said.

Nocera说，这个新的催化剂工作在中性pH和室温条件下，而且容易使用。

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Will all microorganisms grow optimally at a neutral pH?

是否所有的微生物在中性酸碱度中都有最佳的生长？

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They record an epoch before the Endeavour impact when there was aqueous activity at a near-neutral pH.

BBC: Opportunity and Curiosity find similar rocks on Mars