However, the Turtles learned another use of "n" beyond a measure of volatility.

除了用n计算波动性，海龟们还学到了另外一个用法。

youdao

So "N" is a volatility measurement and a useful rule of thumb to classify how far a market has trended.

所以N能衡量市场的波动性，并知道市场向趋势的方向前进了多少。

youdao