1. seepage control of canal 
   渠道防渗
2. dam foundation seepage deformation 
   坝基渗透变形
3. oil and gas seepage 
   油气苗
4. However, water projects in China still have such problems as low standards for flood control systems, poor anti-seepage capacity of embankments, and many potential risks. There is still a long way to go.  
   我国水利工程还存在防洪体系标准低、堤身防渗差、隐患多等问题，今后的建设任务还很艰巨。
5. The installation, use and design and laying of circuit and pipes must conform to relevant technical regulations on fire control. 
   电器产品、燃气用具的安装、使用和线路、管路的设计、敷设，必须符合国家有关消防安全技术规定。

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