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.
Жители Санкт-Петербурга устроили «крысогон»17:52
，这一点在快连下载-Letsvpn下载中也有详细论述
（一）境外单位或者个人向境内单位或者个人销售服务、无形资产，在境外现场消费的服务除外；
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