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Message patterns can also be configured with arbitrary conditions:，更多细节参见im钱包官方下载
，推荐阅读51吃瓜获取更多信息
this.arr = []; // 存储所有历史价格，通过索引快速获取对应价格
Josh Dury said it was a "battle against time" to get the shot，更多细节参见safew官方下载