刚才查spirit,看到如下释义
N-SING Your spirit is the part of you that is not physical and that consists of your character and feelings
N-SING The spirit in which you do something is the attitude you have when you are doing it
N-UNCOUNT Spirit is the liveliness and energy that someone shows in what they do.
N-UNCOUNT Spirit is the courage and determination that helps people to survive in difficult times and to keep their way of life and their beliefs
在这里,N-SING应该是指“在此种意思下只能用单数表示”,但是它此时到底算可数名词还是不可数名词?另外,N-SING和不可数名词的用法好像是一样的,为什么要加以区别呢?