The more hydrogen, the more acidic it is (low pH); the less hydrogen, the more alkaline it is (high pH).
越多的氢原子就越呈酸性(低ph值);越少氢原子就越呈碱性(高ph值)。
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"Mopping up" excess hydrogen ions - Neutralizing substances in the blood, such as bicarbonate and hemoglobin, mop up excess hydrogen ions and prevent pH from becoming too acidic.