这个国家秘密研发的超级武器可以瞬间摧毁一座城市。

The country secretly developed a ___super-weapon that could obliterate a city instantly.

这款新软件成为了他们团队在项目管理中的超级武器，极大提高了工作效率。

The new software became their ___super-weapon in project management, greatly improving work efficiency.