less developed countries造句

1、However, it's in less developed countries that rotavirus causes the worst problems.
然而，在欠发达国家轮状病毒能引起严重问题。

2、China will continue to assist the less developed countries in ASEAN with no conditions attached.
中国愿继续在不附加任何条件的情况下援助东盟欠发达国家。

3、The speed at which cities are growing in the less developed countries is alarming.
欠发达国家城市发展的速度令人担忧。