因为它代表今天
Because it represents today
以上为机器翻译结果，长、整句建议使用 人工翻译 。
因为当前价格代表了所有信息，你就不需要去考虑昨天股价，是涨了还是跌了，再去判断它今天的价格会怎么变化。
Since all the information is in the current price, you don't have to worry about whether it went up or down yesterday, to decide what it's going to do today.
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