Level 6 · word 15,325 of 20,000

infiltration

/ˌɪnfəlˈtreɪʃən/ American
  • n. 渗透, 潜入
Definition
  • n. the act of secretly entering or passing into a place
Example
The spy planned a careful infiltration of the enemy base.
间谍策划了一次周密的渗透行动,潜入敌方基地。