爱因斯坦的父亲和杰克大叔去打扫一个大烟囱。那烟囱只有踩着里边的钢精踏梯才能上去,于是杰克大叔在前,爱因斯坦的父亲在后,一级一级地爬上去;下来时,杰克大叔依旧在前,爱因斯坦的父亲跟在后面。于是他们走出烟囱时,杰克大叔的后背和脸上全都被烟囱里的烟熏黑了,而爱因斯坦父亲的身上竟连一点烟灰都没有。爱因斯坦的父亲看见杰克大叔的模样,相信 Einstein’s father and Uncle Jake cleaned a large chimney. That chimney only stepping on the stepping inside the steel ladder to go up, so Uncle Jack in front, Einstein’s father after the climb up one level; down, Jack Uncle still in front of Einstein’s father Follow behind. So, as they walked out of the chimney, Uncle Jake’s back and face were all black smoked in the chimney, and Einstein’s father had no ashes at all. Einstein’s father saw Uncle Jack’s appearance, I believe