突とっ破ぱ口こう

noun

breakthrough; breach; opening

Used for a decisive advance in research, negotiations, or a difficult situation; also for a physical breach or gap in a barrier.

• その発はっ見けんが研けん究きゅうの突とっ破ぱ口こうとなった。

  That discovery became a breakthrough in the research.

• 敵てき陣じんに突とっ破ぱ口こうを開ひらく。

  Open a breach in the enemy lines.