前两个是必要项，而第三个是选择项。
列出服装策划的必要项目。
做好工作计划是梳理工作流程的必要项。
例如，可指定控制项为必要项目，且包含特定范围的值。
For example, you might specify that a control is required and that it also contains a specific range of values.
只有组件资讯清单是必要项，不过型别或资源两者必须有一项要用来赋予组件任何有意义的功能。
Only the assembly manifest is required, but either types or resources are needed to give the assembly any meaningful functionality.
如果使用者在这时拒绝授与较高的信任层级，而且此更新未标记为必要项，则会执行旧版的应用程序。
If the user declines to grant the higher level of trust at this point, and the update is not marked as required, the old version of the application will run.
不需要为有效作业创建具有必要项目的Notes文档，这些脚本库会负责在作业文档中正确地设置所有的值。
Instead of creating a Notes document with the necessary items for a valid job, the script library takes care that all values in the job document are set correctly.
不要计划太多。做好工作计划是梳理工作流程的必要项。但是在做事以前计划太多，那用来做事的时间就比较少。
Don't over plan. Planning your work is imperative to a smooth work flow. However, too much planning before doing anything makes less time to get things done.
不要计划太多。做好工作计划是梳理工作流程的必要项。但是在做事以前计划太多，那用来做事的时间就比较少。
Don't over plan. Planning your work is imperative to a smooth work flow. However, too much planning before doing anything makes less time to get things done.
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