The country's infrastructure is crumbling because of inadequate investment.该国基础设施因为投资不足而日益破损。A combination of ineffective management and inadequate investment brought about this collapse.管理不力，加上投资不足，导致了此次倒闭。Resources must be redirected into the many under-funded areas of education.资源必须重新调配至诸多投资不足的教育领域。