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。

youdao

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。

youdao

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。

youdao

"The need is so vast, " said Lynn Kelly, executive director of the City Bar Justice Center, a nonprofit arm of the New York City Bar Association that has worked on more than 400 Sandy-related cases.

WSJ: Superstorm Sandy Stirs Legal Mess for Victims

Dylan Jones, who is in the Army, went to his brother's aid, but his arm was fractured by Sion Hughes using a metal bar.

BBC: Mold Crown Court

In Seidemann's case, the court treats the union as an arm of the state and thus sets a high bar for speech it is seen as compelling the employee to make.

FORBES: Magazine Article