You didn't include the original function, but the new function will contain something like:
function kelvin_to_celsius(k)
{
return k - 273.15;
}
Depending of course on your programming language.
The outcome for negative Kelvin is undefined, you could test for that.
The answer is relay station.
Relay station is often used to improve the quality of a broadcast. It is an amplifier for restoring the strength of a transmitted signal. An amplifier is an electronic equipment that increases strength of signals passing through it. Relay station has been known as America's Friendliest travel center.