It's a simple term that encapsulates the fact that relationships at work can reasonably be non-intimate, inconsequential, unimportant and even, dare I say it, disposable or substitutable.
2019年6月六级真题（第三套）阅读 Section C
英英释义
Adjective
1. (of words) interchangeable in a given context without changing the import of the expression
2. capable of being exchanged for another or for something else that is equivalent