...生过度延伸的情况时， 股价将产生与主要趋势反向变动的暂时性折返 现象， 这便是修正趋势或是折返趋势(corrections or reactions) ， 有别于主要趋势的走向， 称为次级趋势。
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增加幅度看来还不算大，但确实增加了，这便折返了2010年的下跌趋势。
That may not seem like much of an increase, but it reverses the downward trend of 2010.
建议：找一种机械式的系统，帮你在上升趋势折返时买入，在反弹时卖出而不卖在底部，当然如果你适合这种方法的话。
Advice: look for a system that helps you buy dips in an uptrend, sell rallies instead of selling into a down-turn, provided your personality can accommodate this style, of course.
菲波纳奇比率描述了市场趋势和相反趋势之间的关系——主要趋势的38%，50%和62%折返。
Fibonacci I ratios describe the interaction between trend and countertrend markets — 38%, 50% and 62% retracements form the primary pullback levels.
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