1. 价格下跌：价格上涨--The price advances; marks up; goes up; rises; goes upward | 价格下跌--The price comes down; drops;declines; collapses; falls; goes down; goes downward | 价格暴跌--The price slumps.

2. 崩溃：collapsed /暴跌/ | collapses /崩溃/ | collapsible /可折叠的/