If the code performing the actions decides not to commit or cannot commit successfully, then it must roll back the transaction to undo the actions.
如果代码执行的操作决定不进行提交或者不能成功提交，那么它必须回滚该事务以取消这些操作。
The results of performing a roll-forward recovery operation could differ slightly from replaying the logs on the standby database using HADR.
执行前滚恢复操作的结果与使用 HADR在备用数据库上重播日志的结果略有不同。
The future margin which is a guarantee of performing the future contract plays very important roll in keeping the future market running healthily.
期货交易保证金作为期货合约履约保证，在保障期货市场正常运行过程中发挥了重要作用。
The future margin which is a guarantee of performing the future contract plays very important roll in keeping the future market running healthily.
期货交易保证金作为期货合约履约保证，在保障期货市场正常运行过程中发挥了重要作用。
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