But the predictive power of Google's system is relatively imprecise, since it depends solely on a large number of people getting sick and hitting their computers.
但是google系统的预测能力相对不稳定，因为他仅仅依赖于大量的患病并且敲击电脑键盘的用户。
China will start building its first large nuclear-power reactor with home-developed 'fourth generation' technology in 2012-13, a senior engineer involved in developing the system said.
中国原子能科学研究院实验快堆工程部总工程师徐说，2012 - 2013年，中国将开始利用自主研发的“第四代”技术，建造中国首个大型核电反应堆。
There are three components to this system: a large electrical power source, metal coils lining a guide way or track, and large guidance magnets attached to the underside of the train.
这种系统有三个组成部份：一个大电源、一条导向线路或轨道沿线的金属线圈、以及附加在列车下面的大导向电磁铁。
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