成功数据库系统的关键在于其能够随着用户需求的变化而发展。

Legal rules are not merely commands backed by threats; they are also rules that confer powers and create obligations.

企业的核心竞争力在于人才，要重视人才培养和团队建设。

我们都是我们选择的总和，有时也是他人选择的总和。