互联网安全更是一个严重的问题，因为网络上的威胁已经从“愚蠢程序员的小把戏”的程度演化到了高深莫测的黑客软件甚至全球性的网络大战的地步。

Internet security is a critical issue as threats have evolved from the level of "stupid programmer tricks" to sophisticated malware and even international cyber-warfare.

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结论在正确认识疾病严重程度的基础上，熟练的分离、切割、结扎等技术及操作程序的规范化是保证LA手术安全性和疗效的关键。

Conclusions Base on the understanding of the severity of the disease, the safety and efficacy of LA depend on the skill of dissection, incision and ligation and the standardization of the operation.

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主要测定项目：主要安全滴定终点来区分等级和副作用的严重程度。

Main Outcome Measures: Primary safety end points were the rates and severity of solicited and unsolicited adverse events.

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