以下为句子列表：
英文: Suffering from cold, wind, heat and rain, they will put on clothes made of tree bark and leaves.
中文: 受到寒冷和风暴，炎热和雨水的折磨，他们会穿上树皮和树叶制成的衣服。
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英文: The effect of the acidic pollutants in the atmosphere on tree bark and leaves
中文: 大气酸性污染物对树皮树叶pH值变化的影响
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英文: The changes of tree bark pH value and its role as a bio-indicator of acid air pollution
中文: 树皮pH值的变化及其对大气酸性气体污染的指示作用
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