表达式3: "c" Subscript, "l" "e" "a" "r" , Baseline equals "a" Subscript, "c" "t" "i" "v" "e" "L" "i" "s" "t" , Baseline to 0.5 , "l" Subscript, 1 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 2 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 3 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 4 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 5 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 6 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 7 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 8 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 9 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 10 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 11 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 12 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 13 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 14 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 15 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 16 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 17 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 18 , Baseline to left bracket, "p" , right bracket , "l" Subscript, 19 , Baseline to left bracket, "p" , right bracketclear=activeList→0.5,l1→p,l2→p,l3→p,l4→p,l5→p,l6→p,l7→p,l8→p,l9→p,l10→p,l11→p,l12→p,l13→p,l14→p,l15→p,l16→p,l17→p,l18→p,l19→p
3
表达式4: "l" Subscript, "i" "n" "e" "s" "L" "e" "f" "t" , Baseline equals 20 minus ceiling left parenthesis, "a" Subscript, "c" "t" "i" "v" "e" "L" "i" "s" "t" , Baseline , right parenthesislinesLeft=20−ceilactiveList
