There are very big difference between the network transaction environment and the traditional transaction environment.
网络的交易环境与传统的交易环境有很大区别。
Online judge system is a representative system in dynamic transaction processing under network environment.
在线评测系统可以看作网络环境下，实现动态事务处理的一个有代表性的系统。
Online judge system is a representative system in dynamic transaction processing under network environment.
在线评测系统可以看作网络环境下，实现动态事务处理的一个有代表性的系统。
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