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In a mountain in Henan, there is a cave that seems to defy the regular rhythms of the seasons. It is icy cold in the summer but warm in the winter. Experts believe there is a physical or chemical cooling mechanism under the ground. The wind brings up cold air, allowing ice to form. But there is no wind at all in winter. That is why the ice melts in winter.
在河南，一个山洞似乎无视着自然规季节的法则。它夏天冰冷,冬天温暖。专家认为在地上有一个物理或化学制冷机制。风带来了冷空气使冰形成。但是在冬天没有风。这就是为什么冰在冬天融化。
词语解释：
1. rhythm n. 节奏;韵律
2. physical a. 物理的
