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来源:雅诚德英语网
It's nearly impossible to achieve and maintain a high-alkaline pH for a prolonged period of time.
要在一小段时间内达到并维持一个高碱性PH值几乎是不可能的。
It's nearly impossible to achieve and maintain a high-alkaline pH for a prolonged period of time.
要在一小段时间内达到并维持一个高碱性PH值几乎是不可能的。