The code in Listing 9 causes an error because it tries to use an ID that already exists in the database.

清单9中的代码导致了错误，因为它试图使用数据库中已经存在的ID。

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When it tries to use the session to commit or rollback a transaction, an IllegalStateException will occur.

当它尝试使用该会话提交或回滚事务时，将发生IllegalStateException。

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With some complex software, it tries to use that information to predict what other things you might like, even if nobody you know has ever offered an opinion on those things before.

借助一些复杂的软件，它试图利用这些信息对你可能还喜欢的其他事情进行预测，即便此前尚未有任何人对这些事物发表过评论。

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For some unknown reason, it tries to force me to use Albany, NY as my departure airport for every search even though I do not live near Albany and have never flown in or out of the airport.

FORBES: Google Flights? Not Ready For Prime Time.

That stops a thief who intercepts a key and tries to use it in a fraudulent transaction.

FORBES: Magazine Article

The trouble, in a nutshell, is that everyone already knows about the pattern and either tries to preempt it by selling sooner or use it to buy into the decline.

FORBES: Does Sell In May and Go Away Work?