Full-time study form, system for three years.

全日制学习形式，学制三年。

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Allen said a prototype of an early warning system for California earthquakes should be completed in about three years.

艾伦说加利福尼亚地震预警系统的模型将用三年左右的时间来完成。

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For more than three years, the world's banking system has lived through the equivalent of wartime.

两年多来，全球银行系统度过了艰难如战时岁月的日子。

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"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

The FAA said the voluntary reporting system for controllers has provided nearly 10 times the data during the past three years compared to the traditional reporting system.

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Another recommendation calls for all politicians to serve four-year terms, to replace the current system under which senators serve for six years or three years and deputies and constables serve for three years.

BBC: Jersey Electoral Commission recommends smaller States

Once connected to the system, whether inside the school or hundreds of miles away at home or work, students can log into an innovative system called Blackboard, in use now for almost three years.

CNN: Wired up for learning