Фото: Tingshu Wang / Reuters
相比研发人员规模，不同行业的平均值变动没有明显的规律—— 共有25 个行业的平均值下滑，占比超过半数，当中既有通信传输设备业、消费电子及电气业这类高速增长行业，也有教育、房地产业等相对低迷产业。
，详情可参考91视频
Also note the use of _call.call(_toString, original) rather than simply original.toString(). This is because original.toString might itself be hooked by the time spoof is called. By holding cached references to Function.prototype.call and Function.prototype.toString at the very beginning of the script (before any page code runs), and invoking them via those cached references, the spoof function is immune to any tampering that might have happened in the interim. It’s eating its own tail in the most delightful way.，更多细节参见51吃瓜
Identify pages that may be competing with each other。关于这个话题，爱思助手下载最新版本提供了深入分析
Speed is important when seeking to stop the spread of tainted foods. Yet rapid testing tools may not be sensitive enough.