只要联锁装置不关闭，就发出停机指令。
在现代的处理器中，HLT停机指令节省了大量的电能与执量，空闲任务几乎总是由一个重复执行HLT停机指令的循环组成。
On modern processors, where a HLT (halt) instruction saves significant amounts of power and heat, the idle task almost always consists of a loop which repeatedly executes HLTinstructions.
即使您的站点通常不停机而且速度很快，仍然有可能由于错误地编写了机器人指令(robots instruction)而将爬行器拒之门外。
If your site is typically available and speedy, you can still inadvertently send the spider packing by miscoding your robots instructions.
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