31.  But perhaps the most humbling experience of all occurred in 1991, when I was on fellowship in Chicago and received a phone call from a 20-year-old college student.

32.  By studying Mars, scientists say we can hope to learn more about the history and perhaps the future of our own planet.

33.  Not tomorrow, perhaps, but a few decades form now, the U. S. may regret the policy drift that is eroding its research base as slowly and as surely as water rusts the steel girders of a bridge.

34.  Before her stint as a student, she would worry that perhaps she was demanding too much.

35.  Perhaps most of them are men.

36.  Perhaps there's no best answer, but many wise ones can be found easily.

37.  Perhaps you can get some tips which seem more useful from others.

38.  For love and learning, in our high school, many teachers perhaps tell us how them make a love.

39.  Perhaps the most famous one for men is "Mister International".

40.  Perhaps almost every man like to watch it.