On the other hand if you are still using Xcode 3 only to avoid the Xcode 4 learning curve it is time to make the switch.
从另一方面来讲，如果你仍然在使用Xcode3只是为了免去Xcode4的学习曲线的话，那么是时候做出转变了。
To be honest I have not used Xcode 3 for months so I will not miss it but if you have a reason why you need to remain with Xcode 3 you should probably avoid upgrading to Lion.
老实说，我已经几个月没有用xcode3了，因此我对它倒没有什么留恋的，但是如果你有理由要保留X code 3的话，那就应该尽量避免升级到Lion。
Xcode 4.1 is a free download and what is actually downloaded is the Xcode installer.
Xcode 4.1是免费下载的，实际下载下来的是Xcode的安装程序。
To tell Xcode which provisioning profile to use, open your Xcode project, open the Target build Settings, and scroll down to code Signing.
要告诉Xcode使用哪个Provisioningprofile，打开Xcode项目，打开Targetbuildsettings，滚动到codeSigning。
To tell Xcode which provisioning profile to use, open your Xcode project, open the Target build Settings, and scroll down to code Signing.
要告诉Xcode使用哪个Provisioningprofile，打开Xcode项目，打开Targetbuildsettings，滚动到codeSigning。
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