exact /iɡˈzækt/ adj.确切的；准确的：exact sciences 精密/严谨的科学；an exact memory 精确的记忆 It was difficult to tell his exact age. 很难说出他的确切年龄。 

［辨析］与accurate和 precise辨见accurate

exactly adv.确切地；恰恰正是：Do exactly as the teacher says. 要不折不扣照教师说的去做。That’s exactly what I expected. 那正是我所期待的。