{"_id":123,"someKey":"someValue","someArray":[{"name":"name1","someNestedArray":[{"name":"value_1","fame":[{"goal":"goal_1"}]},{"name":"value_2","fame":[{"goal":"goal_2"}]}]}]}我这样查询:db.getCollection('city').find({"someArray.0.someNestedArray.1.fame.0.goal":"goal_2"},{"someArray.0.someNestedArray