A new technology comes along and then suddenly everything we've ever done with any older technologies is obsolete and will go away.
新的技术忽如一夜春风来，突然间我们过去所做过的所有技术都过时了并将被淘汰。
In addition, much of the contents of any newspaper is ephemeral; people want their news now; it can become obsolete in a matter of hours.
此外，许多报纸的内容具有瞬时性(ephemeral)；读者要最新的新闻；内容会在几小时内就过时。
He USES a heavy, obsolete Dell laptop from which he has scoured any trace of hearts and solitaire, down to the level of the operating system.
他用的是一个笨重的，老掉牙的戴尔笔记本电脑，里面的红心纸牌和纸牌游戏全被删除了，只剩下操作系统了。
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