阵地

例句：

1. 1. The soldiers were positioned on the battlefield to guard the enemy's advance.
   士兵们被部署在战场上以保卫敌人的前进。
2. 2. The company's main product line is its high-quality defense products.
   该公司的主要产品线是其高质量的防御产品。
3. 3. The team's performance was crucial in securing their position in the league.
   团队的表现对于他们在联赛中占据一席之地至关重要。