The two main reasons why the Ubuntu programmers have deferred making Thunderbird the default e-mail choice are it's lack of a built-in calendar and no Microsoft Exchange support.

Ubuntu程序员们决定推迟把Thunderbird作为默认Email选择的两个主要原因是：内建日历的缺少和没有对Microsoft Exchange的支持。

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The default value is the e-form that was opened when you chose "Publish to document library," in this case, por.xfdl.

默认值是您选择“ Publish to document library ”时打开的电子表单，在本例中是por . xfdl。

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Most of the methods for manipulating this transformation, e. g. Translate, Rotate, and Concatenate, can operate in either PreMultiply (the default) or PostMultiply mode.

大多数用于操控这种转换的方法，比如翻译、旋转和连接可以在左乘模式和右乘模式下实现。

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Apple touted the service's ability to recognize when you're messaging someone else eligible for iMessages, but it appears to be limited to e-mail addresses at this point in the BETA. Delivery confirmation is turned on by default, but those of you who don't like the thrill of the chase will be happy to learn that there's an option to disable read receipts.

ENGADGET: Apple iOS 5 hands-on preview