And he was going to have to write ten of thousands of lines of code.

他要为此编写成千上万行代码。

If an engineer wants a computer to recognise a stop sign, he does not try to write thousands of lines of code that describe every pattern of pixels which could possibly indicate such a sign.

如果工程师想让电脑识别一个停车标志，他不会写成千上万行描述每一个可能表示这种符号的像素模式的代码。