Another product has a CD version for which you pay no extra, but this one is made by someone w/o any Western mentality and, therefore, difficult to use.
Another product has a CD version for which you pay no extra, but this one is made by someone w/o any Western mentality and, therefore, difficult to use.
还有一本是带光盘的书，也不用另外多花钱，但是这本书是不懂西方文化的人编的，因此，用起来有些困难。