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.
Mark Barnfield, commercial director at Severn Trent Green Power, said the resulting gas was cleaned and either "injected into the gas grid" or converted to electricity.。im钱包官方下载对此有专业解读
，这一点在WPS官方版本下载中也有详细论述
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