You can turn on VoiceOver in the Universal Access pane of System Preferences, or by pressing Command-F5 (or Fn-Command-F5 if you have a portable computer).

• 您可以在“系统预置”的“万能辅助”面板中打开VoiceOver,或按下Command-F5(如果有iBook或PowerBook,还可以按下Fn-Command-F5)将其打开。