Assuming that all of your team members update their work items appropriately, the line trends closer to zero (work remaining) as work is completed.

假设所有的团队成员都合理地更新了工作项，那么随着工作的完成，图中趋势线接近于零(剩余工作量)。

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Sorting strings where some items are present but have zero length and some are absent

排序字符串，一些项存在但长度为零，一些不见了

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Select zero or more items from a list: select.

从列表中选择零或多项：select。

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