critical sliding surface

例句：

1. 1.The decision was critical to the success of the project.
   这个决定对项目的成败至关重要。
2. 2. He made a crucial mistake that cost him his job.
   他犯了一个关键的错误，导致失去了工作。
3. 3. The survival of the species depends on its ability to adapt to changing conditions.
   物种的生存取决于其适应变化条件的能力。