Level 6 · word 13,580 of 20,000

penetration

/ˌpenəˈtreɪʃən/ American
  • n. 穿透, 洞察力
Definition
  • n. the act of going into or through something, or deep understanding of it
Example
The nail's penetration into the wood was deeper than expected.
钉子扎入木头的深度比预期的要深。