当局已送往兴建帐篷营地和预制房屋供数百万无家可归的提前夏天雨季和预期成群的疾病-轴承的蚊子。

Authorities have rushed to construct tent camps and prefabricated housing for the millions of homeless ahead of the summer rainy season and the expected hordes of disease-bearing mosquitoes.

不太显而易见的好处移动和预制房屋，他们是环保。

A less obvious benefit to mobile and prefab homes is that they're environmentally friendly.