名词
中文翻译：软层
同义词：
['soft layer', 'soft sedimentary layer']
例句：
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1.The geologist found the soft stratum to be a good indicator of ancient volcanic activity.
地质学家发现软层是古代火山活动的一个良好指示。
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2. The soft stratum is susceptible to erosion and can be easily disturbed by human activities.
软层易受侵蚀，容易被人类活动所扰动。
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3. The study of the soft stratum provides insights into the history of the Earth's crust.
研究软层有助于我们了解地球地壳的历史。