[计] multiprogramming system library
duō dào chéng xù shè jì xì tǒng kù ㄉㄨㄛ ㄉㄠˋ ㄔㄥˊ ㄒㄩˋ ㄕㄜˋ ㄐㄧˋ ㄒㄧˋ ㄊㄨㄥˇ ㄎㄨˋ