同志们，空气循环扇对着窗外吹，普通风扇对着人吹的效果怎么样？

[img]https://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc587c6f9.png[/img][img]https://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc587c6f9.png[/img][img]https://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc587c6f9.png[/img]夜晚的室外真的好凉快。想形成空气对流。