He set up an escape route with relays of horses, supplies and money.
他设立了一条逃生路线，并准备了替换的马匹、补给和钱。
The fast frozen food processing line is controlled with traditional relays and breaks down often.
速冻食品生产线多为传统的继电器控制，易发生故障。
The fast frozen food processing line is controlled with traditional relays and breaks down often.
速冻食品生产线多为传统的继电器控制，易发生故障。
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