n.

1. 传送；传达[U]
2. 传染，传播[U]
   the transmission of diseases

   疾病的传播

3. 【机】传动装置；变速器[C]
4. （广播、电视等的）发射，播送；传输[U]
5. 电报；（广播、电视播送的）节目[C]

n.

1. the action or process of transmitting or the state of being transmitted.
2. a programme or signal that is transmitted.
3. the mechanism by which power is transmitted from an engine to the axle in a motor vehicle.