They also keep watch on the American state of Hawaii from an operations center near Honolulu.

VOA: special.2009.03.17

So, we keep the atoms with the lowest ionization energy in the center.

因此，我们把电离能,最低的原子放在中间。

麻省理工公开课 - 化学原理课程节选

But it's a struggle to keep the center open.

VOA: standard.2010.04.29

In the past, she has sold her own jewelry and possessions to keep the center going.

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But, Kadima, the political party founded by the now ailing Prime Minister Ariel Sharon, has a chance to keep the political center alive in Israel and to hold onto the popularity it enjoyed when Mr. Sharon was in better health.

NPR: The Future of Sharon's Kadima Party

Key Republicans said the White House must keep Norwood at the center of its efforts if it hopes to pass a bill the president can support.

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