伙计们!我的MongoDB中有这些数据:{"_id":ObjectId("5aa35c78e84868839683c4ca"),"dateTransacted":ISODate("2018-03-10T04:18:00.074Z"),"taskerFee":1500,"customerFee":4000,"transactionFee":50,"mnmltaskrProfit":30},{"_id":ObjectId("5aa3ac08e84868839683c4cb"),"dateTransacted":ISODate("2018-03-10T09:57:28.637Z"),"tas