translation.en: In one case, the students are told, "But you know, if you want to change your mind, I'll always have the other one here, and in the next four days, before I actually mail it to headquarters," -- yeah, "headquarters" -- "I'll be glad to swap it out with you.
translation.zh: 第一种情况，学生们被告知，“你知道， 如果你改变了主意，另外一张还在我这里。 我要四天以后才把这些照片寄到总部去。 我很乐意。是的，“总部”。 我很乐意跟你换。事实上，