Return a single instance of an aggregation object.
返回聚合对象的单一实例。
Orders are sent individually, the response from each order being stored for later aggregation into a single response message, which shows the status of all the elements in the batch request.
Orders是分别发送的，并为稍后聚合为单个响应消息存储每个订单的响应，从而显示批处理请求中所有元素的状态。
It then creates a single data feed from this aggregation.
然后从这种聚合中创建单独的数据提要。
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