一个人有点疲惫感,当然无需大惊小怪,因为这是常见的事。一个人疲惫过甚,久久地打不起精神,这可能是患了某种病,即疲惫症,这就应该治一治了。若是这种现象较多,甚而普遍,带有社会性,那就值得研究研究了。 Of course, you do not need to be surprised if you are tired, because it is a common occurrence. A person who is too tired and can not afford to fight for a long time may be suffering from some kind of disease, which is tiredness, and this should be cured. If this phenomenon is more, if not universal, socially, it deserves to be studied.