"Recycling is what we see as the best approach for the US," Christman said.

他说：“对美国来说，重复利用塑料是最好的办法。”

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Shannon Christman isn't poor, but she is frugal, and sometimes other people confuse the two.

珊农-克莉斯曼并非穷人，但是她由于朴素，别人有时候二丈和尚摸不着头脑。

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School board chairman Albert Christman said the policy has got "everybody up in a roar".

BBC: US school ends classroom ban on pregnant students

Mr Christman said "just a handful" of students had been affected by the policy, which dates to 2006.

BBC: US school ends classroom ban on pregnant students

"Currently, there are no approved therapies in regenerative medicine for heart failure, " said Karen Christman, assistant professor of bioengineering at the University of California, San Diego, who wasn't involved in the latest experiments.

WSJ: Nanotechnology Holds Promise for Heart Patients