名词
中文翻译：内部滴落
同义词：
['internal leak', 'internal drip']
例句：
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1.The internal drop in the oil level indicated a problem with the engine.
油位的内部下降表明发动机有问题。
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2. The internal drop in the temperature caused the pipes to freeze.
温度的内降导致管道冻结。
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3. The internal drop in the water level was due to a leak in the pipeline.
水位的内降是由于管道泄漏造成的。