存在密不可分的关系用英语怎么写

There is an inseparable relationship

密不可分───interwovenness;关系───relationship

In endless human being history evolution course, person and the natural environment are be interwovenness , vitally interrelated.───在人类漫长的历史演化进程中，人与自然环境是密不可分，息息相关的。