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Weak Trader's Equation so most should wait for higher probability, like 2nd sell signal or a couple consecutive big bear bars closing near their lows. Else need big reward to offset low probability. Some will use wide stop and scale in. 较弱的交易方程，因此最好等待更高的概率，比如二次做空信号，或者几个连续的很大的熊棒并且收在低点，否则就需要足够大的回报以抵消低概率带来的影响。有些交易者会使用宽幅止损并逐级建仓的方法。