obturate / ˈɒb təˌreɪt, -tyə- /

📖毕业后词汇钝化钝化的钝的圆钝的

obturate 的定义

v. 有主动词 verb

ob·tu·rat·ed, ob·tu·rat·ing.

  1. to stop up; close.
  2. Ordnance. to close so as to prevent a flow of gas through it, especially the escape of explosive gas from a gun tube during firing.