单词：preliminary vacuum
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She inspected the carpet for small items. She saw a paper clip and a rubber band. She picked them up. She put them into a little box on the kitchen counter. She plugged in the vacuum cleaner. She turned on the switch. The cat ran out of the room. She
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Oliver went to Target to buy a new vacuum cleaner. The vacuum cleaners at Target cost $60 to $500. The expensive ones were too bulky and, of course, too expensive. He bought the cheapest one in the store: a Dirt Devil Vibe. Its label claimed that it
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This is Scientific American 60-Second Science. I'm Cynthia Graber. This will just take a minute. The fridge is one of your home's biggest energy hogs. Better insulation can make refrigerators much more efficient. And a panel encasing a vacuum is one
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HARI SREENIVASAN, PBS NEWSHOUR WEEKEND ANCHOR: One federal appeals court has weighed in on the Trump administration's immigration ban, and should another appeals court in another region of the country offer a competing view, that could set the debate
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By Scott Bobb Johannesburg 02 November 2009 President Armando Guebuza casts his ballot for presidential, parliamentary, provincial assembly elections in Maputo, 28 Oct 2009 Provisional results from last week's elections in Mozambique show President
VOA标准英语2009年(十一月)