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位于亚利桑那州的平静小镇山默顿，曾在洛杉矶缉毒组供职的警长雷·欧文斯（阿诺·施瓦辛格饰）尽职尽责维护当地的治安。这一日，数名不速之客造访小镇，更有一名农夫遭人谋杀。与此同时，在另一边的拉斯维加斯，FBI探员约翰·班尼斯特（福里斯特·惠特克饰）正在押运臭名昭著的大毒枭加布里尔·科尔特兹（爱德华多·诺列加饰）。谁知加布里尔·科尔特兹半路被人救出，其本人在劫持一名女探员后驾驶经过改装的跑车飞速逃离，趁夜朝着位于墨西哥边境的山脉逼近。小镇的宁静生活被彻底打破，雷·欧文斯警长即将经历充满枪火与杀戮的混乱一天……在下听说，张家后来可是富甲一方，更遑论眼下封了王爵。进宫后，所有人把车马停在长安门广场，然后步行入宫。战争结束后的世界，已经荒废了。他实在有些承受不住，以至于到最后一股子带着sāo味的热流蔓延在树干上，随即有滴滴答答落下去。3. Physical period: Uniform circular motion is a kind of periodic motion. The so-called periodicity refers to the fact that after a certain period of time, the moving object repeats back to its original position, and the instantaneous speed repeats back to its original size and direction. The time it takes for an object to move in a uniform circle is called a period. The period is expressed by the symbol T, and the period is also a physical quantity describing the speed of uniform circular motion. The long period indicates the slow motion of the object, while the short period indicates the fast motion of the object.