internecine

公司因部门之间的内斗而效率低下。

The company became inefficient due to ___internecine conflicts between departments.

宫廷内部的权力斗争削弱了王国对外敌的防御。

The ___internecine power struggle within the royal court weakened the kingdom's defenses against invaders.

研究团队之间的内斗拖延了突破性发现的发表。

The ___internecine rivalry between the research teams delayed the publication of the breakthrough findings.