Thousands of soldiers and sailors were firing live artillery and dropping sonar buoys Thursday in waters near where a South Korean naval vessel, the Cheonan, was sunk by an explosion in March.
星期四，数以千计的士兵和水手在韩国天安号军舰3月被炸沉的海域附近发射实弹，设置声纳浮标。
15homes are surrounded by flood waters from the swollen Red River, Sunday, March 21, 2010, south of Fargo, North Dakota.
2010年3月21日，北达科他州，法戈南部，被红河上涨的洪水包围的房屋。
Glen Canyon dam, which impounds the waters of the Colorado river, was opened for several days starting on March 4th in order to replenish the river's sediment levels.
库存科罗拉多河水的格伦峡谷大坝自3月4日已开闸数天，以填充河道的泥沙高度。
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