in·ter·pen·e·tra·tion
noun/ˌɪntəˌpenɪˈtreɪʃn/
/ˌɪntərˌpenɪˈtreɪʃn/
[uncountable, countable] (formal)- the process of spreading completely through something or from one thing to another in each direction
（互相）贯穿，渗透 - the increasing interpenetration of the public and private sectors
公共和私营部门日益相互渗透
- the increasing interpenetration of the public and private sectors