zsh:Command not found : adb

/s?__biz=MjM5MzA0ODkyMA==&mid=211534369&idx=1&sn=7c2c9c0118a8e0f8dadb7f5b47874102&scene=1&srcid=2J0ufxDXGnVgYXpxyzv1&key=dffc561732c22651502b8939d97fa5d71bb3e335872a70d6eb116be41790e2e12eb457063a73892cf90beace3e80ed9f&ascene=0&uin=NDQ2Mzk3NjQw&devicetype=iMac+MacBookPro9%2C2+OSX+OSX+10.10.5+build(14F27)&version=11020201&pass_ticket=jiWeeKtuPCVuNgK7ACtAMtxdT0tWVLzyxKgAJukVoQR%2BMxr7O5bLI9cLYniIs935