2014-01-16 Sierra Leone Uses New Device to Improve Power Supply
Welcome to As It Is from VOA Learning English. Hi. I’m Caty Weaver. Today on the program we have two reports on electrical power. Scientists and engineers say they have…
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Welcome to As It Is from VOA Learning English. Hi. I’m Caty Weaver. Today on the program we have two reports on electrical power. Scientists and engineers say they have…