seepage       
noun [ U or C ] uk/ˈsiː.pɪdʒ/ us/ˈsiː.pɪdʒ/
 渗出;渗漏
a process in which a liquid flows slowly out of a hole or through something
  Oil spills and seepage from refineries are common. 炼油厂的石油泄漏和渗漏情况很常见。 
 See: seep
 - More examples
- The tunnel had constant problems of water seepage.
- Its primary objective was preventing further leaks and seepages.
- Seepage problems intensified as the production increased.
- They have lined their canals with concrete and seepage is kept to a minimum.
- The seepage was traced to a faulty valve in the airflow system.