名词
中文翻译：内部下水管
同义词：
['interior plumbing', 'interior piping例句：1. The new bathroom design features a sleek and modern interior downpipe system.（新浴室设计采用了光滑现代的内部下水管系统。）']
例句：
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1. The new bathroom design features a sleek and modern interior downpipe system.
新浴室设计采用了光滑现代的内部下水管系统。
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2.The construction crew had to work around the existing interior downpipes.
施工队不得不绕过现有的内部下水管。
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3. The company's new product line includes a range of high-quality interior downpipes for residential and commercial use.
该公司的新产品系列包括一系列高质量的住宅和商业用内部下水管。