听说过有一种水果可以改变你的味蕾，使酸的东西尝起来是甜的吗？
Ever heard of a small fruit that alters your taste buds, making all sour things sweet?
许多植物的叶子吸收二氧化碳，并使之化合成有机酸。
Leaves of many plants take up carbon dioxide and fix it in organic acids.
蛋白质中的氨基酸还能增强免疫系统，使你对感冒和其他感染有更强抵抗力。
The amino acids in protein can also stimulate the immune system, making you more resistant to colds and other infections.
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