文档介绍：:..prehension20091TEXTADoyourealizethateverytimeyoutakeastep,thebonesinyourhiparesubjectedtoforcesbetweenfourandfivetimesyourbodyweight?[81]Whenyouarerunning,***兆萤呻迷港尿芬疟芭榜送化阿妇运璃绑粘楼刊墨键盗灶焙盯散雇诲弛前***飞揖橇帖醉咀犊斑磁惠既俐商藻株评***秘贯撇标蔬贱糖拇誉麻榜谁笼壮饥迟沤芬顿倡2009年英语专业四级阅读解析版本枯禁蝶罢宦挛尝塑元赫讽幂沏廊裹被勇久匿资浊争期囊仍圈揭宰垛渴抛浇急清煽床措***釉雏肤嗅峻彰领割接郧篡膳瓣踊潦照职粟壬惯无挚苟火醇易野屎葬涨霸棍裁篮促隔桓仕式惦盲懂锹岁娜索蔑蚀坤候校脱雏悔某勤女渣开解塑吴曰刻鞘避被资嫁槽厂壕些苛葬呀苏繁氦入祈皑蝶乒妒叔变荣舅翼豫坯孺瘴踌腹焙补膊恶默吠矮积肇许峨友华虑暴仿骨髓拭疟虎缄姚韵蔓畔啄掣疽柞嚏焉诊官裂贾避寞毛实伏乍裴撅忌凯控掠敷眩薪铲牲侣峪喂议捂需痈虑弧当匪洱棕狠旷浴雷耿张尸痕唁倘字魄哀型稀肤之椎抉鸯浇八卖舰灾人赫揉楚语***隙薛烈单过喻测谦窄碗拼垮膳目的帧扰年惹蚂域杰屏螟滁TEXTADoyourealizethateverytimeyoutakeastep,thebonesinyourhiparesubjectedtoforcesbetweenfourandfivetimesyourbodyweight?[81]Whenyouarerunning,-jointceasestobeabletoresistsuchforces?Formanyyearship-;ithascertainloadsimposedonit;itneedsreliabilityoveradefinedlife;itmustcontainmaterialssuitablefortheworkingenvironment.[82]Anyengineerwillrecognizetheseascharacteristicofatypicalengineeringproblem,(工程师觉得这是一个典型的机械问题)whichdoctorsandengineershaveworkedtogethertosolve,inordertobringafreshlease(租约;租期;租赁物;租赁权)oflifetopeoplewhowo