The longer the cycle the wider the window that will contain a reversal to a specific level of certainty.
时间越长，趋势包含更广泛的窗口，此更加确定能够包含反转点。
2
For instance, if a stock has made a higher bottom each year for five years, then makes a lower bottom than the previous year, it is a sign of reversal and may mark a long down cycle.