問題：
I spent quite sometime figuring how to set up adb on Mac, so I figure writing how to set it up might be useful to some people.我花了很長時間來研究如何在 Mac 上設置 adb，所以我認爲寫下如何設置它可能對某些人有用。 adb is the command line tool to install and run android apps on your phone/emulator adb 是在手機/模擬器上安裝和運行安卓應用的命令行工具
解決方案：
參考一： https://en.stackoom.com/question/1D72y參考二： https://stackoom.com/question/1D72y