this.arr = []; // 存储所有历史价格，通过索引快速获取对应价格
Supports only English
。雷电模拟器官方版本下载对此有专业解读
In a statement, Lovell's family said: "We will miss his unshakeable optimism, his sense of humor, and the way he made each of us feel we could do the impossible. He was truly one of a kind."。夫子对此有专业解读
* @returns {number} - 当日价格的跨度，详情可参考Line官方版本下载