最简单的方法就是用病毒代码改写可执行文件的开头部分。
The simplest way ( and the least subtle ) was to overwrite the first part of the executable file with the virus code.
它通过寻找计算机病毒的“签名”(已知计算机病毒代码的标本)来做这件事情。
It does this by looking for virus "signatures" - chunks of computer code from known viruses.
Feschotte提议将少量病毒代码注入禽类的基因里，可能产生对同类病毒的抗体。
Feschotte suggests that it is likely having a bit of the virus's code integrated in a bird's genome might have conferred immune protection against similar viruses.
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