It does not necessarily mean that the system is vulnerable to the attack.

它并不意味着系统是容易被攻击的。

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Inwhat is considered London's worst terrorist attack, the city's publictransportation system suffered a series of coordinated suicide attacks.

2005年7月7日发生在伦敦的地铁袭击事件被喻为最恐怖的一次袭击。 在城市公共交通系统中接连发生了一系列有预谋的自杀性袭击。

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Based on the information gathered, hackers can deduce possible vulnerabilities and choose the best method of attack for the selected target system.

黑客可以根据所收集的信息推断出可能的弱点，并选择对选定目标系统的最佳攻击方法。

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Russia objects. But the United States says the system would protect Europe from a possible attack by Iran.

VOA: special.2009.05.23

That's a big problem and so can you protect these cells that you give to the recipient from attack by the recipient's immune system?

并且至关重要,那么你们想办法保护这些植入受体的细胞,使它们免受免疫系统的排异反应么

耶鲁公开课 - 生物医学工程探索课程节选

A problem with adenoviruses is that your immune system recognizes them, and if your immune system recognizes the virus then it can attack the virus and eliminate it from the body.

关于腺病毒有个问题,免疫系统会识别腺病毒,如果免疫系统识别了这些病毒,就会进而攻击并从体内清除病毒

耶鲁公开课 - 生物医学工程探索课程节选

That is what led to the alert regarding our rail system, because of the information suggesting the consideration of an attack against the rail system back in February of 2010.

WHITEHOUSE: Press Briefing

If FailSoft is not set up, then nobody can talk if all control channels are lost through an attack against the system.

FORBES: Free Speech v. Denial Of Communications For Public Safety Agencies?

The abrupt attack on the welfare system triggered by the comedian's incident met with loud protest from welfare experts and people writing to newspapers and in the blogosphere.

WSJ: Japan Welfare Case Stirs Debate on Who Should Care for Needy