A team race where members take turns completing legs.

• In track and field, a baton-passing race such as 4×100.

团队接力比赛，队员依次完成各段。

• 田径项目中的交接接力棒比赛，如4×100米。

An electrically operated switch that controls a higher-power circuit.

• It lets a small signal turn a larger current on or off.

电动继电器，用小信号控制大功率电路的开关。

• 使小信号能够控制较大的电流通断。

A fresh set of people, animals, or vehicles to take over.

• A shift or stage in a sequence of replacements.

作为接替而来的新一批人、动物或车辆。

• 交替更换中的一班次或一个阶段。

To pass on information, a message, or a request.

• To transmit data or signals from one point to another.

转达信息、消息或请求。

• 将数据或信号从一点传送到另一点。

To arrange people or animals in shifts so one relieves another.

• To supply fresh horses or teams along a route.

按班次安排人员或动物轮换。

• 在路线上提供可接替的马匹或队伍。