In the Map process, the master node takes the input, divides it up into smaller sub-tasks, and distributes those to worker nodes.
在映射过程中，主节点接收输入，把输入分割为更小的子任务，然后把这些子任务分布到工作者节点。
When the master administrator creates a new virtual portal, he or she delegates the administration of the new virtual portal to a group of sub-administrators.
当主管理员创建了新的虚拟门户时，他或她将新虚拟门户的管理委托给次级管理员组。
Once the covenant’s six main articles (all abstract nouns) and dozens of sub-headings were agreed on, we all had to sign a master document.
等到契约的六条主要条款（全部都是抽象的名词）和更多的副标题得到确定，我们就得在一份主文档上签字。
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