It 's the sense of otherness, separateness.

它是相异，分离的感觉。

youdao

The important thing is to know the exact meaning of that other person because that's the only way to honor the otherness of the person.

重要的是知道另一个人的真正重要性,因为那是尊重那个人独特性的唯一方法。

耶鲁公开课 - 文学理论导论课程节选

He's willing to acknowledge that there's always something of me in my interpretation, but it's a good something because after all I am mindful of the horizon of otherness.

他愿意承认,在解读中总是带有“我“的成分，但这些成分是好的,因为“我“毕竟是留心差异性的。

耶鲁公开课 - 文学理论导论课程节选

It's just historicizing otherness in a way that somehow or another satisfies my quest for information.

只是给相异性赋予历史意义,它满足了我对知识的渴求。

耶鲁公开课 - 文学理论导论课程节选