* 新增当日价格，并返回该价格的跨度
Read the full story at The Verge.
，这一点在谷歌浏览器【最新下载地址】中也有详细论述
"While news crews were covering the accident, individuals attempting to steal the transported money attacked the press with unusual violence," the National Association of Journalists of Bolivia said in a statement.
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// 1. 统计每个元素出现次数