Let R be an abelian ring ( all idempotents of R lie in the center of R), and A be an idempotent matrix over R.

设R是一阿贝尔环（R的所有幂等元都在中心里），A是R上的一幂等阵。

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As the most important finance intermediaries, the commercial Banks lie in the center of the world's finance industry.

银行作为各种市场活动中最重要的金融中介，处于金融业的中心地位。

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This paper presents a real-time tracking system which tracks moving object and makes the target always lie in the center of image frame assisted by controlling a servo device.

该文给出了一种运动目标的跟踪算法，它与云台设备控制相结合，可使被跟踪目标始终位于图像的中心区域。

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But Jones is accused of a lie that has put her at the center of the latest crisis in Florida's Department of Children and Families (DCF)--and, by extension, the re-election campaign of Republican Governor Jeb Bush.

CNN: Is Florida bad for kids?

It's sandwiched vertically in the center of the dash, where the traditional stack of HVAC and stereo controls would normally lie.

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