There are many teachers in schools and colleges who seem duller than the dullest of their pupils; they go through the motions of teaching, but they are as impersonal as a telephone.

• 大中学里的许多老师，似乎比他们最迟钝的学生还要呆滞，他们只是上上课，但其实他们淡漠得就像公用电话一样。