Whenever pages are mapped by a process, reverse mappings must be established for all of those pages.

当页被一个进程映射时，必须为所有那些页建立反向映射。

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To preserve context across pages, that context must be established in a place that is accessible to various components.

要为跨页面保留上下文，必须在各种组件都可访问的地方建立上下文。

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In larger projects individual roles can be carried out by a number of individuals, so clarity must be established within the team.

在较大的项目中，个别的角色可以由许多个人承担，因此团队中责任必须明确。

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Continuity must be established between elementary and secondary school, which only 10 per cent of students attend.

UNESCO: MEDIA SERVICES

Clear and purposeful programmatic objectives and milestones must be established, including a decision now to build a useful prototype aircraft to fly by 1995.

CENTERFORSECURITYPOLICY: Save The National Aerospace Plane

"A broad-based government of national unity must be established, " he wrote.

BBC: NEWS | Middle East | France ready to apologise to Iraq