That is when nervous bulls finally decide that the uptrend is for real and rush in to buy or nervous bears become convinced that the decline has no bottom and jump in to sell short.

• 上涨的成交量表明输家在继续进场，让趋势继续。当输家放弃市场时，成交量下跌，趋势失去动力。成交量给了交易者几个有用的线索。