替班的英文：
relay

relay是什么意思：
v. 传达；转播，传送；（使）接替
n. 接力赛；替班；中继设备；转播，传送

She relayed the message, then frowned.
她把消息带到了，然后皱紧了眉头。

To relay any customer complaints to supervis.
处理并向主管汇报客人的投诉。

A new relay of horses was harnessed to the cart.
用作轮换的马都已套到了那辆马车上。

And since the variable costs to the Relay Division would be only $10 for the new relay as compared to $12 for the old relay.
同时扩音器部门的新扩音器的变动成本为10美元,比旧扩音器每单位成本12美元节省。

Rescuers worked in relays to save the trapped miners.
救援人员轮班营救受困的矿工。