TSR
n.（名词）A program, such as a spell checker or calendar, that remains loaded in memory so that it may be quickly recalled while another program is running, as found in operating systems which do not allow multitasking.常驻程序：一直存在于内存中的程序，如拼字检查或月历，在不允许处理多任务的操作系统中其它程序运行时其可被即刻恢复
来源：t(erminate and) s(tay) r(esident) t(erminate and) s(tay) r(esident)
