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VOA: special.2010.06.28

Newton proved his idea by measuring how much gravity force would be needed to keep the moon orbiting the Earth.

VOA: special.2011.06.01

I won't stand by while the special interests use the same old tactics to keep things exactly the way they are.

VOA: special.2009.09.12

It had to keep moving to reach San Francisco in twenty-five days as required by the government contract.

VOA: special.2010.04.26

By selling it to the government, the mining interests hoped to keep the price of silver from falling.

VOA: special.2010.06.03

"I won't stand by while the special interests use the same old tactics to keep things exactly the way they are.

VOA: standard.2009.09.10

"The critical issue was, of course,politics." "They by all means are trying to keep General Noriega in jail.

VOA: standard.2010.07.07

The farmers themselves pay to keep it running. Their new irrigation method has cut water usage by half.

VOA: standard.2009.12.10

About 12 hours after the House began its debate, the final tally late Saturday was 220 to 215, with 39 Democrats choosing to vote against their leadership, despite personal lobbying by President Obama to keep Democrats on board.

VOA: standard.2009.11.08

"What I would like for the country and everybody to know is that with the age of the computer, it takes time for us to try to keep up with the computer but if some people would start writing again, and sending their bills by mail, maybe it could ease a little of the burden as far as the financial difficulties that we are in."

VOA: standard.2010.04.13