translation.en: CA: So you would test a bunch of lengths of trends in time and see whether, for example, a 10-day trend or a 15-day trend was predictive of what happened next.
translation.zh: 所以你会及时地测试大量的趋势区间 看是否 举个例子 是否10天或15天的走向 可以对下一步做出较准确的预判