The lower the pH, the higher the acidity; highly acidic foods and beverages include diet sodas (2.9 to 3.7), strawberries (3.5) and barbecue sauce (3.7).
pH值越低，酸性越高；无糖苏打饮料（pH2.9-3.7）、草莓（pH3.5）以及烧烤调味酱（pH3.7）等食物饮料均属高酸食品。
The plants and animals that have evolved over time to thrive in slightly alkaline surface waters-their pH is around 8.3-are now having to adapt to a 30% increase in the acidity of their surroundings.
在漫长的进化过程中，海洋动植物已经习惯了海面的弱碱性——PH值大约为8.3，但现在它们不得不去适应所处环境酸度30%的下降。
The results show a bleak future for Marine life as ocean acidity rises, and suggest that similar lowering of ocean pH levels may have been responsible for massive extinctions in the past.
结果表明，由于海洋酸度上升，海洋生物的未来暗淡，认为类似持续降低的海洋pH值可能导致了过去大规模物种的灭绝。
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