名词
中文翻译：排水沟
同义词：
['drain', 'ditch', 'outlet', 'channel']
例句：
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1.The city has a network of drainage canals that help to manage the rainwater runoff.
这个城市有一套排水沟系统，帮助管理雨水的排放。
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2. The construction of the new highway will require the installation of several drainage canals.
新高速公路的建设将需要安装几个排水沟。
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3. The farmers used to rely on natural drainage canals for water management.
农民过去依赖自然排水沟进行水资源管理。