名词
中文翻译：Unknown
同义词：
['reserved water', 'retained water']
例句：
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1. The reservoir has a lot of retained water that needs to be released.
水库有很多需要释放的滞留水。
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2. The rainwater in the ground is often retained for later use.
地面的雨水经常被保留用于以后使用。
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3. The plant's roots are capable of retaining large amounts of water.
植物的根系能够储存大量的水分。