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1.The concentric circles theory suggests that the Earth's magnetic field is responsible for some of the planet's weather patterns.
同心圆理论表明，地球的磁场对地球的某些天气模式负有责任。
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2. The concentric circles theory has been used to explain the formation of the Moon and the Sun's movement across the sky.
同心圆理论被用来解释月球的形成和太阳在天空中的运动。
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3. The concentric circles theory posits that the Earth's core is composed of molten iron, while its outer layers are made up of solid rock.
同心圆理论认为，地球的核心是由熔融的铁构成的，而其外层则由固态岩石组成。