实现网络安全审计就好似去牙科医生的诊所：总是很难找到时间去做这件事，当最终花了时间去做它后，你只能期待听到坏消息。

• Performing a network security audit is like going to the dentist's office: It's hard to find time to do it,and when you finally do get around to it,you can only look forward to bad news.