[countable, usually singular] a change to a lower value or worse condition降低；衰落◆a downward slide in the price of oil石油价格的下跌◆Drastic action was needed to prevent a slide into recession.需要采取果断措施防止经济陷入衰退。⨁a downward / dramatic / sharp / steady / steep slide下滑；暴跌；逐渐下降；骤降 ⨁ to halt / prevent / stop a slide停止／防止／终止下滑 [countable] a small piece of film held in a frame that can be shown on a screen when you shine a light through it幻灯片◆a slide show/projector幻灯演示；幻灯机 [countable] a single screen of information that is part of a presentation given using a computer（计算机）幻灯片放映◆Press F5 to run the slide show.按 F5 键运行幻灯片放映。