有些“我”虽然无害，但是它们的存在依然以记得自己为代价。
Some 'I's are innocuous, yet they still exist at the expense of self-remembering.
虽然大多数大肠杆菌无害，但肠出血性大肠杆菌(EHEC)可以产生破坏血细胞和肾脏的志贺毒素或维罗毒素。
While most E.coli bacteria are harmless, a group called enterohaemorrhagic E. coli (EHEC) can produce toxins, known as Shiga toxins or verotoxins, which damage blood cells and the kidneys.
根据无线安全专家Joshua Wright，这个bug大约已经有四年了，虽然大多数是无害的，但是会给那些恶意访问者提供切入点。
According to wireless security expert Joshua Wright, the bug has been around for about four years now and, although mostly harmless, could provide an entry point for mal-intentioned visitors.
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