投资专家比尔·格罗斯和沃伦·巴菲特建议,在股票崩溃时要谨慎行事。 Investment experts Bill Gross and Warren Buffett advise caution amidst crashing stocks.

投资大师比尔·格罗斯（Bill Gross）警告称，不要在股市暴跌的情况下逢低买入，而沃伦·巴菲特（Warren Buffett）的行动表明可能存在“卖出信号”。 Investment guru Bill Gross warns against buying the dip amidst crashing stocks, while Warren Buffett's actions indicate a possible 'sell signal'. 两位专家都建议在当前市场条件下谨慎行事。 Both experts suggest caution in the current market conditions. (400个字符) (400 characters)