penetration

詳細解釋：

pen.e.tra.tion

n.（名詞）
The act or process of piercing or penetrating something, especially:
滲透：穿透或滲透的行為或過程，尤指：
The act of entering a country or an organization so as to establish influence or gain information:
滲透，瀰漫：進入一個國家或組織以施加其影響力或獲取情報的行為：
例句：
.If the policy is accepted that the Soviet Union has a right to penetrate her immediate neighbors for security, penetration of the next immediate neighbors becomes . . . equally logical.(W. Averell Harriman)
.如果蘇聯出於安全考慮而有權對其最接近的鄰國進行滲透並竊取情報的這種策略手段得到容忍，那么它對其他鄰國情況的刺探及滲透同樣也會變得符合邏輯了.(W.阿弗萊爾·哈里曼)

An attack that penetrates enemy territory or a military front.
突破：深入敵區或軍事前沿的襲擊
Insertion of the penis into the vagina or anus.
（ * 時）將 * 插入 * 或 *
The power or ability to penetrate.
穿透的力量或能力
The depth reached by a projectile after hitting its target.
打進程度：火箭或飛彈擊中目標後所達到的深度

The degree to which a commodity, for example, is sold or recognized in a particular market.
暢銷度：一種商品在例如某一特定市場的銷售或被認可的程度
The extent of influence that one culture or nation has on another.
滲透：一種文化或一個國家對另一文化或另一國家所產生的影響的強度
The capacity or action of understanding; insight.
理解的行為或能力；洞察力