c盘清理大师，清理系统盘，使系统能高速的运行，再也不用担心c的垃圾文件过多而导致系统盘越用越多从而越来越卡-c master disk cleanup, clean up the system disk, the system can run fast, never have to worry too much junk c file system disk caused more you use, the more so as more and more cards