Definition
The point at which a process or activity can no longer continue; the final stage.
山穷水盡（的境地）
This project has reached the end of the line due to a lack of funding.
由于缺乏资金，这个项目已经走到了尽头。
After many attempts, they discovered they had reached the end of the road with their options.
经过多次尝试后，他们发现自己的选择已经走到了尽头。
When all his claims were proven lies, his scheme reached the end of the line.
当他所有的谎言被揭穿时，他的计划就走到尽头了。