Slowly the area became what visitors see today -- a dry land of high flat mesa tops and deep canyons formed through thousands of years by flowing rivers.

VOA: special.2010.07.05

You shoot something, you should know when it will land, where it will land, with what speed it will land, how high it will go.

抛出一个物体,我们要知道落地时间,落地位置,还有落地的速度,最高点的高度

耶鲁公开课 - 基础物理课程节选

at General Eisenhower's headquarters,General Jodl, the representative of the German High Command and of Grand Admiral Doenitz, the designated head of the German state, signed the act of unconditional surrender of all German land,sea and air forces in Europe to the Allied Expeditionary Forces, and simultaneously to the Soviet High Command."

VOA: special.2011.06.16