'Describes a delta within a timeframe in plain language.
:param timeframe: a string representing a timeframe.
:param delta: a quantity representing a delta in a timeframe.
:param only_distance: return only distance eg: "11 seconds" without "in" or "ago" keywords'

def describe(self, timeframe, delta=0, only_distance=False):

    humanized = self._format_timeframe(timeframe, delta)
    if (not only_distance):
        humanized = self._format_relative(humanized, timeframe, delta)
    return humanized
