infiltration
/ˌɪnfɪlˈtreɪʃn; ˌɪnfɪl`treʃən/ n
1 [U] ~ (of sth) (into sth) infiltrating or being infiltrated 渗入; 渗透
infiltration of poisonous chemicals into the water-supply 有毒化学药品向水源的渗入.
2 ~ (of sb/sth into sth); ~ (of sth with sb/sth) (esp military or politics 尤用於军事或政治)
(a) [U] infiltrating of people, ideas, etc （人员、 思想等的）渗入, 潜入, 混入
the infiltration of spies, troops, etc into an area, organization, etc 特务、 部队等向某地区、 某组织等的潜入
the infiltration of an organization with one`s agents 己方代理人向某组织的渗入.
(b) [C] instance of this 渗透活动; 渗透战术.