名词
中文翻译：Unknown
同义词：
['earthquake', 'seismic activity', 'seismology']
例句：
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1. The earthquake caused widespread damage to the city.
地震使城市遭受了广泛的破坏。
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2. Seismic activity is a natural phenomenon that occurs in the Earth's crust.
地震活动是一种发生在地球地壳的自然现象。
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3. Seismology is the study of earthquakes and their causes.
地震学是研究地震及其原因的学科。