    # File lib/rbot/core/utils/utils.rb, line 199
        def Utils.secs_to_string(secs)
          ret = []
          years, secs = secs.divmod SEC_PER_YR
          secs_to_string_case(ret, years, _("year"), _("years")) if years > 0
          months, secs = secs.divmod SEC_PER_MNTH
          secs_to_string_case(ret, months, _("month"), _("months")) if months > 0
          days, secs = secs.divmod SEC_PER_DAY
          secs_to_string_case(ret, days, _("day"), _("days")) if days > 0
          hours, secs = secs.divmod SEC_PER_HR
          secs_to_string_case(ret, hours, _("hour"), _("hours")) if hours > 0
          mins, secs = secs.divmod SEC_PER_MIN
          secs_to_string_case(ret, mins, _("minute"), _("minutes")) if mins > 0
          secs = secs.to_i
          secs_to_string_case(ret, secs, _("second"), _("seconds")) if secs > 0 or ret.empty?
          case ret.length
          when 0
            raise "Empty ret array!"
          when 1
            return ret.to_s
          else
            return [ret[0, ret.length-1].join(", ") , ret[-1]].join(_(" and "))
          end
        end