'{', '[', '(', ')' ,'] ','} ' ( ) A , bo ol "[ a+ b* (5 -4 )] *{ x+ b+ b* ({ 1+ 2) }} " tr ue " [ a+ b* (5 -4 )] *{ x+ b+ b* (( {1 +2 )} }" fa ls e n ( ) ( ) 0 , 5 ( 0 ) st op s, pe rio d, in te rv al n s 50 0 50 ( in te rv al ) ( "% s" , A n ar g m 50 0 "A %s C% sE ", 7, [' B' ,' D' ,' F' ] "A BC DE F" in de xO f re pl ac eF irs t % s, ar gs , sp lit , % s , % s , ,。。。。。。以下内容略