infiltration
🇺🇸
/ˌɪnfɪlˈtreɪʃn/
🇬🇧
/ˌɪnfɪlˈtreɪʃn/
When someone secretly enters a place or group to get information.
The spies carried out an infiltration into the enemy's base.
間諜滲透敵人的基地。
When a liquid slowly enters a solid material.
The water infiltration into the ground helped the plants grow.
水分滲透到地下有助於植物生長。