摩擦者

例句：

1. 1. The friction between the twomachines is causing a lot of wear andtear.
   两台机器之间的摩擦导致了很多磨损。
2. 2. The friction between the two parties hasled to a breakdown in communication.
   双方的摩擦导致了沟通的破裂。
3. 3. Thefriction between the two countrieshas been a major source oftension for years.
   两国之间的摩擦多年来一直是紧张的主要来源。