士兵们在敌方海岸成功建立了滩头阵地，为后续部队登陆创造了条件。

The soldiers successfully established a ___beachhead on the enemy coast, creating conditions for the landing of follow-up troops.

这家初创企业在欧洲市场建立了立足点，为未来的扩张奠定了基础。

The startup established a ___beachhead in the European market to lay the foundation for future expansion.