战争严重损坏了该国的基础设施。

The war has badly damaged the country's ___infrastructure.

建造房屋很容易，但同时却忘记升级基础设施和设施。

It is very easy to build homes but at the same time forgetting to upgrade the ___infrastructure and facilities.

投资基础设施对可持续发展至关重要。

Investing in ___infrastructure is crucial for sustainable development.