我有以下文件：

"content": [
    {
        "_id": "5dbef12ae3976a2775851bfb","name": "Item AAA","itemImages": [
            {                 
                "_id": "5dbef12ae3976a2775851bfd","imagePath": "https://via.placeholder.com/300","imageTitle": "Test 300"
            },{
                "_id": "5dbef12ae3976a2775851bfc","imagePath": "https://via.placeholder.com/250","imageTitle": "Test 250"                 
            }
        ]
    }

，我想知道是否有一种方法可以只返回数组中的数据，但带有“名称”和文档“ main _id”，以便结果集为

        "itemImages": [
            {                 
                "_id": "5dbef12ae3976a2775851bfb",{
                "_id": "5dbef12ae3976a2775851bfb","imageTitle": "Test 250"                 
            }
        ]

我尝试使用mongodb find和聚合函数，但都没有帮助检索上述结果。谢谢您的帮助