excitation contactor

例句：

1. 1. The news of the new invention was a great source of excitation for everyone.
   新发明的消息是每个人极大的兴奋源泉。
2. 2. The performance left us all with an intense sense of excitation.
   表演让我们所有人感到极度的兴奋。
3. 3.Excitement is contagious; it can spread from one person to another.
   兴奋是传染性的；它能够从一个人身上传播到另一个人身上。