trend over time的用法和樣例：
例句
- The long-term trend in Europe is towards cremation as the younger generation is showing less preference for gravestones.
但是從長(cháng)期趨勢來(lái)看，比起墓碑石，洲年輕一代更偏好于火葬。 - The short and medium term trends are bearish while the long term trend is now sideways.
短中期趨勢為熊市，而長(cháng)期趨勢目前轉為橫向。
