network infrastructure短语¹⁵¹⁷¹ 基本例句 网络基础设施 Computer viruses are now spreading quickly over the Internet worldwide, which are extremely harmful not only to common users but also to the network infrastructure. 计算机网络病毒在全球范围迅速蔓延，在对普通用户造成危害的同时也使全球特别是亚洲地区的因特网主干网一度瘫痪。 cnki