Another more reasonable selling tool is to sell when a company's P/E ratio significantly exceeds its average P/E ratio over the past five or 10 years.
更合理的卖出时机是在一家公司的市盈率大幅超出其过去5年或10年的平均市盈率的时候。
Shares are deemed pricey when the p/e ratio is above its long-run average.
如市盈率超出长期平均状况，股份价格即被视为昂贵。
The forward four-quarter P/E ratio for the S&P 500, according to Thomson Reuters, is just 12.7.
汤姆森-路透公司**发布的标普500指数的远期四季P/E值只有12.7。
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