这个日期仅仅是估计而不是不变的的翻译：This date is only estimated rather than unchanged 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

This date is only estimated and not the same

This date is only estimated rather than unchanged

But this date is merely the estimate is not invariable

This date is only an estimate rather than a static

This date is only estimated rather than unchanged