以下是谷歌（google.com）搜索引擎的UA。
判断方法：使用“google.com”作为关键字识别，之所以不使用“google”作为关键字识别，是因为还存在大量手机浏览器使用了“GooglePlay”、“google AppleWebKit”字样，可以混入此类结果
AdsBot-Google (+http://www.google.com/adsbot.html)
Google-Adwords-Instant (+http://www.google.com/adsbot.html)
Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B143 Safari/601.1 (compatible; AdsBot-Google-Mobile; +http://www.google.com/mobile/adsbot.html)
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36 AppEngine-Google; (+http://code.google.com/appengine; appid: s~capable-pixel-161515)
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36 AppEngine-Google; (+http://code.google.com/appengine; appid: s~westmylove122)
Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US) AppEngine-Google; (+http://code.google.com/appengine; appid: s~virustotalcloud)
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Safari/537.36
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