名词
中文翻译：Unknown
同义词：
['drain', 'ditch', 'gutter', 'drainpipe', 'sewer']
例句：
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1. The rainwater is diverted into the nearby river toich.
雨水被引到附近的河流中。
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2. The city has a well-maintained toich system to manage stormwater.
该市拥有一套完善的排水系统来管理暴雨水。
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3.The construction crew carefully excavated the toich and installed new pipes.
施工队仔细挖掘了排水沟并安装了新的管道。