Update ch9-01.md

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@ -41,10 +41,10 @@ Alice存了$200然后检查她的余额同时Bob存了$100。因为A1和A2
``` ```
Alice first Bob first Alice/Bob/Alice Alice first Bob first Alice/Bob/Alice
0 0 0 0 0 0
A1 200 B 100 A1 200 A1 200 B 100 A1 200
A2 "=200" A1 300 B 300 A2 "= 200" A1 300 B 300
B 300 A2 "=300" A2 "=300" B 300 A2 "= 300" A2 "= 300"
``` ```
所有情况下最终的余额都是$300。唯一的变数是Alice的余额单是否包含了Bob交易不过无论怎么着客户都不会在意。 所有情况下最终的余额都是$300。唯一的变数是Alice的余额单是否包含了Bob交易不过无论怎么着客户都不会在意。