A trapeze bar provides youngsters with the exercises necessary to build upper arm and abdominal strength, power they'll need to swing across those bars.
吊架能够让他们在玩的同时,练习臂力和腹力,这两种力量在玩吊架时都是必须的。
In 2005 Dr Bar-Cohen decided to find out by pitting a human against a trio of robotic arms, based on EAPs, in an arm-wrestling contest.
2005年,拜科恩博士决定找到这个问题的答案,在一场扳手腕比赛中,他让一个人与三支电活性聚合物材质的机器人手臂进行较量。
A "security arm" is a long, heavy metal or wood bar that blocks a road, but it can be moved up to let people drive by if they have permission.
一扇“安检栅栏”门是一个长长的,用于封闭道路的重金属或木的栏栅栏门,但如果人们获得允许进入的许可,它就会向上移动让他们进入该区域。
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