The depth of knowledge to be gained from books is richer and broader t han what can be learned from direct experience.

从书本中所学的知识要比从直接的实践中学到的更丰富、更广博。

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Because consumers won't experience direct benefits, it is important that carriers make sure customers don't have dropped calls or service interruptions during the transition.

WSJ: U.S. Wireless Carriers Move to New Technology��For Voice