This is one of the reasons why a secular market trend may be said to encompass the primary trends within it.

这是原因之一世俗市场趋势可以说，包括它的主要趋势。

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Market trends can be classified as primary trends, secondary trends (short-term), and secular trends (long-term).

市场趋势可分为初级趋势，次要趋势(短期)，以及长期趋势(长期)。

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I think that there are two trends working in solar's favor as the primary power source of the future.

我认为，有利于太阳能成为主要电能来源的趋势有两个。

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One of the primary entertainment trends of recent years -- and one with legs into the future -- can also be traced back 50 years.

CNN: 2012: Predicting the future, with hindsight

Market trends are divided into primary movements and secondary reactions.

FORBES: 80-Year-Old Wisdom That Still Works

And Labour dismissed plans to reduce primary class sizes, saying that current trends already meant that an average of 25 would be achieved in the next few years.

BBC: Lib Dems 'teachers' friend'