mouthpiece /ˈmaʊθˌpiːs/

• 1. 

  N-COUNT The mouthpiece of a telephone is the part that you speak into. (电话的) 话筒

  例：

  He shouted into the mouthpiece.

  他冲着电话话筒大叫。

• 2. 

  N-COUNT The mouthpiece of a musical instrument or other device is the part that you put into your mouth. (乐器的) 吹口; (器具的) 衔口

  例：

  He showed him how to blow into the ivory mouthpiece.

  他给他演示了如何把气吹进象牙吹口。

• 3. 

  N-COUNT The mouthpiece of an organization or person is someone who informs other people of the opinions and policies of that organization or person. 代言人

  例：

  Their mouthpiece is the vice president.

  他们的代言人是副总裁。