求Computer Network

Khan

英文版电子书的另一个好处在于，可以通过语音引擎把内容读出来，对我这样的懒人比较合适。毕竟德语的语音引擎实在难找。

Khan

At one time, 80 percent of AT&T's capital value was the copper in the local loops. AT&T was then, in effect, the world's largest copper mine. Fortunately, this fact was not widely known in the investment community. Had it been known, some corporate raider might have bought AT&T, terminated all telephone service in the United States, ripped out all the wire, and sold the wire to a copper refiner to get a quick payback.

这句就蛮逗的。