对于某些特定的常用数据项，如日历与通讯簿等，在标准方面已经达成一致的协议，但是还缺乏方便的方式来传送这些数据。

There's already solid agreement on standards for certain common data items like calendars and contact lists, but an unfortunate lack of convenient ways to transmit such data.

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vCalendar 是一个老的标准日历数据交换格式，是 iCalendar 的前身，为互联网邮件联盟（IMG）所颁布。

vCalendar is an older standard exchange format for calendar data promulgated by the Internet Mail Consortium (IMC).

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而仅仅用了标准策略，Flume就能阻止不该显示的日历内容。

Flume was able to prevent the content of the calendar to be displayed simply based on its standard policies.

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