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What works in this country and this league will not necessarily work against opponents who can keep the ball and attack with subtlety and intelligence.

这个国家和它的联赛需要明白的是，没必要和一个能控球并能将细腻聪颖应用到进攻上的对手打对攻。

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But just because an electricity company's customers can pay their bills online, it does not necessarily follow that the company's critical control systems are vulnerable to attack.

但那仅仅是为了让一家电力公司的客户可以在网上支付帐单，它并不一定意味着这家公司的关键控制系统就容易受到攻击。

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In other words, it has not been clear that the immune system can recognize and attack lung tumors.

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Not before, so it can be repaired if the attack is postponed.

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In cyberspace, where attacks can launch in milliseconds, a nation might not have enough time to detect an attack and mount a defense.

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