slide (from …) (to …)to become gradually lower or of less value 逐渐降低；贬值◆Sales have continued to slide. 销售额持续下滑。◆Shares slid to a 10-year low. 股价跌至 10 年来的最低点。◆Shares slid (by) 38¢. 股价下滑 38 分。
to move gradually into a worse situation 逐渐陷入；逐渐衰退（到）◆The industry has slid into decline. 这个行业已呈衰退之势。◆They were sliding towards bankruptcy. 他们正逐步陷入破产的境地。