penetration

名词 penetration:

an attack that penetrates into enemy territory

同义词：incursion

clear or deep perception of a situation

同义词：insight

the act of entering into or through something

the ability to make way into or through something

the depth to which something penetrates (especially the depth reached by a projectile that hits a target)

the act (by a man) of inserting his penis into the vagina of a woman