relais

In a sentence

• Le relais de poste permettait l'envoi rapide de lettres au 18ème siècle.

  The postal relay allowed the quick dispatch of letters in the 18th century.

  In this sentence, 'relais' is used to refer to a station or service that facilitates the relay or quick transfer of messages, specifically postal services.

• Nous avons passé le relais de la direction à un nouvel employé.

  We handed over the leadership relay to a new employee.

  Here, 'relais' metaphorically represents the transfer of responsibility or control within a process, akin to a relay race in sports.

• Ce relais électrique est essentiel au fonctionnement de la machine.

  This electric relay is essential to the functioning of the machine.

  In this technical context, 'relais' denotes a switch or device that opens or closes circuits electromechanically or electronically.