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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.坐等神转折。五龙（陶泽如 饰）逃荒进城凭着一身蛮力做了大鸿米店的伙计，食量惊人的他惹来了米店冯老板和大女儿绮云（杨昆 饰）的百般刁难，而自小便作了六爷姘妇的小女儿织云（石兰 饰）却见他总是笑逐颜开，白天到处受人欺负的五龙只有晚上躺在米仓里大口大口的嚼生米时才能感觉到踏实。偶然一次机会，让五龙发现织云和六爷的手下阿保在一起鬼混，为了报复阿保平日里对自己的欺辱，五龙偷偷向六爷告发，后来阿保就被人给捅了。初尝报复带来的快感让五龙兴奋的彻夜无眠，而生性风流的织云对他的百般勾引又令他完全迷失。从此，五龙便开始对身边欺负自己的一个个城里人疯狂的报复……Ji Jie, who is also a reporter, saw some mixed feelings here. On the one hand, the fighting spirit and vitality of these female reporters are really admirable, but on the other hand, it is regrettable that the female reporters of the NPC and CPPCC became popular because of these "gossip" instead of wonderful questions.时至现代，地球上已经筑起了新的文明，但宇宙联盟的威胁亦再次出现。为了人类的未来，凭借超古代文明而觉醒的12位星神战士，将担负起保卫地球的重任。< h2 > This is a heading 很快，美嘉怀孕了，弘请求她把孩子生下来，二人会见双方家长，弘诚恳坚决的请求得到了大家的体谅。但悲剧再次发生，美嘉失去了孩子。更大的打击来自高二开学后，弘提出分手。因为得不到一个确切的理由，美嘉苦守许久才渐渐开始新生活，和庆大的温柔的男生优恋爱，升大学，一切都好像好起来，这年圣诞，优向美嘉求婚，但随即而来，美嘉知道了弘一直隐瞒自己的悲伤的秘密……一切都被打破了，美嘉知道自己最爱的，仍然是弘。