n.

1. 接替；接替人员；替换的马（或猎狗等）[C]
2. 接力赛跑；接力赛中的一程[C]
3. 分程传递；传达；转运；中继转播[U]
4. 【机】伺服电机[C]
5. 【电】继电器[C]

vt.

1. 分程传递；转达；转播
   He relayed the news to his mother.

   他将这个消息转达给他的母亲。

2. 给……换班；使得到替换（或补充）
3. 用继电器控制

vi.

1. 分程传递；转达；转播

vt.

1. 重新放置；重新铺设；重新涂
   She wanted to relay the carpet in her new home.

   她想重新铺设她新房子的地毯。

n.

1. a group of people or animals engaged in a task for a period of time and then replaced by a similar group.
   ▸a race between teams of runners, each team member in turn covering part of the total distance.
2. an electrical device which is activated by a current in one circuit to open or close another circuit.
3. a device to receive, reinforce, and retransmit a signal.
   ▸a message, programme, etc. transmitted by such a device.

v.

1. receive and pass on (information).
2. broadcast by a relay.

v.