There have been peaks and troughs in the long-term trend of unemployment.

长期以来失业率一直时起时伏。

《牛津词典》

The long-term trend has been downwards.

长期趋势呈下降态势。

youdao

So the decline may be part of a long-term trend.

所以这一下降数字可能只是长期发展趋势的一部分。

youdao

While in secular bull markets the very long-term trend is up, in secular bear markets the very long-term trend (17 years typically) is sideways to down.

FORBES: Riding The Rallies And Shorting The Slides In A Big, Long Bear Market

" The bottom line, they wrote, "is that Netflix has yet to break its near-term or long-term trend lines, " and "until it does we would not consider Netflix to be topping.

FORBES: Magazine Article

It should be noted that even if the December lows were broken, the long-term positive action of the on-balance volume (OBV) indicator would still keep my long-term trend analysis positive.

FORBES: 80-Year-Old Wisdom That Still Works