Liceyboi
2020-10-04T01:49:50+00:00
是否可以类比为橡皮和塑料尺子之间的反应[img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc4cc6331.png[/img][img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc4cc6331.png[/img][img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bc4cc6331.png[/img]