inroad|inroads

敌军发动了一次突袭，占领了边境的几个村庄。

The enemy made a sudden ___inroad and captured several border villages.

这家科技公司成功打入了欧洲市场。

The tech company has made notable ___inroads into the European market.

敌人的频繁侵扰逐渐削弱了边境的防御力量。

Frequent ___inroads by the enemy gradually weakened the border defenses.