重新映射键盘
This method has been successfully tested on a MacBook Pro
late 2011 model running OS X 10.12.6,
and can be applied to other machines as well.
Generally, Apple Service Providers need to
replace the entire topcase if there are failures
regarding the keyboard or trackpad. (Usually around $300)
No need to worry if that's not accidental damage, and
your device is covered by Apple Care or
