That rise in oil prices has now been more than reversed, but the slowing has intensified during the past several months.

try：油价上升势头早已被扭转，但价格下降趋势在过去的几个月中已开始加强。

尽管油价的上涨趋势并没有抑制住，但在过去的几个月里其涨势一直得到有力控制。