名词
中文翻译：Unknown
同义词：
['earthquake', 'seismic', 'tremble', 'shake']
例句：
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1. Earthquakes can cause buildings to collapse.
地震可以导致建筑物倒塌。
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2. The seismic activity in the region has been increasing recently.
该地区的地震活动最近有所增加。
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3. He was so tremulous that he could barely stand upright.
他如此颤抖以至于几乎站不稳。