After the user has opened the Web page, he can add or remove entries, or mark entries as completed, which keeps them displayed in the list, but crossed out.

在用户打开该网页之后，可以添加或删除条目；或者将条目标记为已完成，这样相关条目虽然仍然显示在列表中，但是已经被删除。

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As the tasks are completed, activity members can check off the to-do items that help to mark the progress of the project.

任务完成后，参与活动的成员可以关闭用来标记项目进度的任务项。

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Mark Mallory, along with two other scientists from the Canadian Wildlife Service, recently completed a survey that used fieldwork data spanning the last 33 years.

Mark Mallory 与来自加拿大野生动物保护署的其他两位科学家最近完成了一个调查，这个调查所使用的野外数据跨度达到33年。

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Quarterback Mark Sanchez completed 24 of 37 passes for 269 yards, and the Jets accrued 393 yards of total offense.

WSJ: Jets Have Reasons to Believe

Resuming on 201-6, Mark Wallace soon completed his century before he fell to Alex Noffke, who ended with 3-62.

BBC: Wharf and Harris torment Gloucs

Hollywood moguls Barry Diller and David Geffen dropped out of UCLA and the University of Texas, respectively, while Microsoft's Bill Gates and Facebook's Mark Zuckerberg never completed their studies at Harvard.

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