n.摔跤；翻跟头
adj.斜的
动词tumble的现在分词.
Participants are judged by their tumbling skills,balance,flexibility,strength,grace,rhythm and personality. 一个运动员的不平高低要视其筋斗、平衡、柔韧、力量、优美、节奏和个人风格等因素而定。
Trampoline and tumbling can be traced to archaeological drawings in ancient China,Egypt and Persia. 有关蹦床和翻筋斗的描绘，可以上溯至古代中国、埃及和波斯的壁刻画。
滚动式
n.障碍；阻碍; 绊脚石
