存在可以是某种地位，历史记录，或所在位置。

Presence can be a status, history of activity, or location.

youdao

估计所在位置：阿富汗

Presumed location : Afghanistan

youdao

定位：能够确定你所在位置的系统，将会非常有价值。

Location awareness: a system that knows where you are will be a valuable item.

youdao

Slightly freaked out, I reach for my head, or perhaps we should say I reach for where I would expect my head to be, but I don't feel anything there.

略微惊吓之余,我用手去触碰头部,也许我们应该说,把手放到,预想中我头部所在的位置,但那里什么也没有

耶鲁公开课 - 死亡课程节选

Because these molecules can span across the membrane from outside to inside, they're in just the right position to take messages that they receive from outside the cell and transmit them through the membrane into the cells internal apparatus, and that's what they do.

因为这些分子能穿过细胞膜,连通细胞内外,它们所在的位置非常适于接受信息,它们能将外界获得的信息,通过细胞膜传递给细胞器,这正是它们的功能

耶鲁公开课 - 生物医学工程探索课程节选