center of friction

例句：

1. 1.The car's engine is at thecenter of the problem.
   汽车的引擎是这个问题的中心。
2. 2. The team needs to find away to reduce the center of friction betweenthem.
   团队需要找到一种方法来减少他们之间的摩擦。
3. 3. The new design reduces thecenter of friction for better performance.
   新的设计减少了摩擦，以获得更好的性能。