许多发展中国家面临经济挑战。

Many ___developing countries face economic challenges.

如今，发达国家和发展中国家都在计算机化上花费大量金钱。

Nowadays, both developed and ___developing countries spend a lot of money on computerization.

国际援助对发展中地区至关重要。

International aid is crucial for ___developing regions.