friction-monger

例句：

1. 1. The doctor warned us about the dangers of long hours at work.
   医生警告我们长时间工作的危险。
2. 2. She was a friction-monger who always found fault with others.
   她是一个总是找别人毛病的摩擦制造者。
3. 3. The new machine reduced the need for manual labor, reducing the risk of friction-producing accidents.
   新机器减少了对手工劳动的需求，降低了产生摩擦事故的风险。