electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit
using or providing or producing or transmitting or operated by electricity
pass along
the act of passing something along from one person or group to another
a race between teams; each member runs or swims part of the distance
electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit
a fresh team to relieve weary draft animals
a crew of workers who relieve another crew
