rapidity of convergence

例句：

1. 1. The car's rapidity in accelerating is impressive.
   这辆车加速的速度令人印象深刻。
2. 2. The team's rapidity in responding to the situation was commendable.
   团队对情况的快速反应值得赞扬。
3. 3. The rapidity of the river has made it difficult for us to navigate.
   河流的流速使我们难以航行。