Mendel, who was supposed to be teaching high-school students, actually, you know, discovered the laws of genetics -- as a hobby, basically.
如： 奥地利遗传学家孟德尔, 本来他应该去教中学生， 而大家知道，实际上他发现了遗传学法则。 事实上，那只是他的一个业余爱好而已。