https://qooah.com/2012/12/09/google-now-%e5%bc%b7%e5%8b%a2%e7%99%bb%e9%8c%84-mac-%e5%b9%b3%e5%8f%b0-chrome-%e7%80%8f%e8%a6%bd%e5%99%a8%e7%a1%ac%e6%92%bc-siri/