電線桿上有兩個人
Isometric exercise - Wikipedia, the free encyclopedia在一個偏僻的村莊,一條羊腸小道上有一根筆直的電線桿,說也奇怪,常常有人在那出事。不久一對年輕男女不小心騎車撞倒,當場斃命。一天晚上,5歲的小志和他媽媽在回家路上經過那兒,小志突然“媽媽,電線桿上有兩個人。”媽媽牽著他的手快速走開說:“小孩子不要亂說”但Isometric exercise or isometrics are a type of strength training in which the joint angle and muscle length do not change during contraction (compared to concentric or eccentric contractions, called dynamic/isotonic ......
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