conductor /kənˈdʌktə/ CET4 TEM4

• 1. 

  N-COUNT A conductor is a person who stands in front of an orchestra or choir and directs its performance. (交响乐、合唱的) 指挥

• 2. 

  N-COUNT On a train, a conductor is a person whose job is to travel on the train in order to help passengers and check tickets. 列车员 [美国英语]

• 3. 

  N-COUNT On a tram or a bus, the conductor is the person whose job is to sell tickets to the passengers. (公共汽车等的) 售票员

• 4. 

  N-COUNT A conductor is a substance that heat or electricity can pass through or along. (热、电的) 导体

  例：

  Graphite is a highly efficient conductor of electricity.

  石墨是一种高效的电导体。

• 5. 

  → see also semiconductor