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1. Potassium oxalate is a common ingredient in many foods, especially those high in protein.
钾草酸盐是许多食物中常见的成分，尤其是那些富含蛋白质的食物。
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2. The plant uses potassium oxalate to protect its leaves from damage by UV radiation.
这种植物使用钾草酸盐来保护其叶片免受紫外线辐射的损害。
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3. In some cases, potassium oxalate can be used as a natural preservative for food storage.
在某些情况下，钾草酸盐可以作为天然的食品储存防腐剂。