详细阐述了重视图书馆信息安全的必要性，并指出只有通过数据库加密才能真正解决图书馆信息资源的安全性。
This paper explains necessity of treasuring library information security, and in point of solving security of library information only if database ciphering.
最后，您正确地指出EntityManager实现只有一个，这就不需要进行JNDI查找，并使得使用JPA实体组件变得异常简单。
Finally, you rightly pointed out that there is only one EntityManager implementation, which eliminates the need to do a JNDI lookup, and makes using a JPA entity component extremely easy.
今天，委员会指出所有市民只有四分之一的市民足够健康，并指出长时间的使用电脑可能是原因。
Today, the board says that only one quarter of all citizens are adequately fit and suggests that spending too much time using computers may be the reason.
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