谁能帮我看看这个学费要怎么理解?

小蜜告诉我的学费的问题。这还是去年的学费。比较confuse那个/c.u/是个什么东西? 那一年的学费是每个学期*2就可以了吧??希望有人能帮忙看一下。谢谢

The current rate of tuition for the MS students in our program is $4731/c.u./semester.  This will probably increase by 3% to 3.9% for the coming academic year.  The general fee is currently $291/c.u/semester. and this will probably increase by 3% to 3.9% for the coming academic year as well.  The biotech fee is $440/c.u/semester. and this will stay the same.  Currently health insurance is $1506/semester, but this too is likely to increase (it went up 9.3% between the last academic and current academic years).
-baidu 1point3acres
btw.那个general fee是个什么东西呀?

general fee 字面理解是不是通用费用,猜想是不是杂费啥的.!?