但只有２·５％的水是供人类利用的淡水的翻译：But only 2·5% water is fresh water for human use 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

But only 2·5% water is fresh water for human use

But only then 2 · 5% water are for the human use fresh water

But there is only 2 5 per cent of the water is fresh water for human use

But only 2·5% water is fresh water for human use