名词
中文翻译：中心
同义词：
['centre', 'core', 'focus']
例句：
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1.The pericenter of the planet is where the equator meets the polar regions.
行星的圆心是赤道与两极相交的地方。
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2. The center of the Earth's gravity is located at the core.
地球的重力中心位于地核。
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3.The focus of the conference was on discussing future developments in renewable energy.
会议的焦点是讨论可再生能源的未来发展趋势。