• 1. to spread over: 遍布
• 2. to spread over unexpected events: 遍布突发事件
• 3. to spread icing over cake: 糕点上撒糖霜

• 1.Astronomical research began to spread over the whole range of electromagnetic waves.
  天文研究开始向整个电磁波谱范围延拓。
  dict.yoduao.com
• 2.Vulnerable virtual machine template images cause OS or application vulnerabilities to spread over many systems.
  有漏洞的虚拟机模板镜像会导致许多操作系统或应用程序上的漏洞传播到更多系统。
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• 3.In many parts of the country, the poles supporting nets, over which the cultivated nori spores are spread and left to grow.
  在这个国家的许多地方，栽培紫菜孢子在支撑网状物的柱子的上面传播生长。
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