有一些原因导致水资源短缺的翻译：A number of reasons lead to water shortages 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

There are some causes water shortage

A number of reasons lead to water shortages

Has some reasons to cause the water resources short

There are a number of reasons leading to shortages of water resources

A number of reasons lead to water shortages