We were using a test-chat room, test space chat room, where they were able to communicate with Professor Low, to ask questions and to exchange views and to have this feedback on their projects.

我们利用聊天室，进行测试，在那里,学生能和Low教授沟通，问问题，交流观点,并获得有关项目的反馈。

麻省理工公开课 - 媒体、教育、市场课程节选

Researchers said the two main factors driving food price inflation were high agricultural food prices and a low sterling exchange rate.

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Low currency exchange rates are also to blame for the revised outlook.

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Low-cost exchange-traded funds buy baskets of gold stocks and typically have low fees.

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