All you have to do is hold the little plastic card to the windscreen as you approach the checkpoint, and a scanner reads your unique identification number.
你所要做的，只是在抵达检查站时把小塑料卡拿到玻璃橱窗前，而扫描仪会读出你唯一的身份证号码。
At the second LSCP, you can see your newly created snapshot (with all checkpoints and snapshots having a CNO, or checkpoint number).
第二次执行lscp命令时可以看到新创建的快照(所有检查点和快照都有一个CNO，或检查点号)。
A checkpoint defines a point during the loading process at which the database has successfully processed a specified number of records.
检查点定义数据库在加载流程中成功处理指定数量的记录时的时间点。
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