Something like Windows XP, which is 45 million lines of code or so, is really beyond any singlepersons ability to comprehend or even imagine.
比如Windows XP系统包含大约4千5百万行代码，这完全不是单独某个人可以理解甚至想象的。
2
The singlepersons played the joke that shopping online could console their lonely hearts, and many slogans online advocated them to buy products.
单身的人开玩笑说，网上购物可以安慰他们孤独的心，许多网上的口号提倡他们购买产品。
3
Other alternative input devices include single switch devices, devices that track head movements, and alternative keyboards for persons with mobility impairments.