名词
中文翻译：正常下沉
同义词：
['normal subsidence', 'normal deposition', 'normal settlement']
例句：
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1. The river has been experiencing a period of normal sinking since the construction of the dam.
自从大坝建设以来，河流经历了一段正常的下沉期。
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2. The earthquake caused significant normal sinking in the area.
地震导致该地区发生了显著的正常下沉。
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3. The scientists monitored the water level and noted that there was a slight normal sinking during the rainy season.
科学家们监测了水位，并注意到雨季期间出现了轻微的正常下沉。