In Part 2, you'll start to train the system for new items.

在第2部分中，将对系统进行培训，让它学习新东西。

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It incorporates new knowledge on the fly, without the need to reconfigure or re-train the system.

它会动态地吸收新知识，而不需要对系统进行重新配置或重新训练。

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The system then uses a variety of machine-learning techniques to train itself to be able to grade any number of essays or answers automatically and almost instantly.

然后，该系统利用多种机器学习技术进行自我培训，以便以一种近乎即时的方式对众多短文或答案进行自动评分。

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He says the display was designed to look like a map of the local Washington Metro train system instead of a tree.

VOA: special.2009.12.01

From the tragedy in Moscow's subway, to the 2004 Madrid train bombings and the explosions in London's public transit system the following year, experts say no country is immune to terrorism.

VOA: standard.2010.03.30

But it looks more likely that the technology is in its infancy and will require users to train the system, and be patient with its errors.

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However, this approach requires drugs to make the virus active and a vaccine to train the immune system to finish it off - this is not just round the corner.

BBC: Analysis: A cure for HIV?

Peptide vaccines: These also train the immune system to recognize proteins associated with the HIV virus.

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