独自一人在这条河里游泳是不安全的的翻译：Alone it is not safe to swim in this river 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

Alone to swim in this river is unsafe

Alone it is not safe to swim in this river

Alone one person in this river the swimming is unsafe

All alone in this river Swimming is not safe

Alone it is not safe to swim in this river