N-COUNT
特定时刻；（尤指）当口，重要关头
At a particular juncture means at a particular point in time, especially when it is a very important time in a process or series of events.
例句
What's important at this juncture is the ability of the three republics to work together...
在这个关键时刻，最重要的是这3个共和国的合作能力。
We're at a critical juncture in terms of his domestic program.
就他的国内计划而言，我们正处于一个紧要的关口。