The flexible member of some subassemblies can include a pair of arms.

一些子组件的柔性构件可包括一对臂。

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Sometimes you need to be a man who can rely on a pair of arms, a person who can read your silence...

有时候，你需要的不过是一双可以依靠的臂膀，一个能读懂自己沉默的人。

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"We saw a pair of arms stretching across the land," the villagers told the soldiers, and before long they learned that only one young man in the land had arms that could stretch that far.

“我们看见一双长长的手臂横跨地面！”附近的村民告诉那些士兵。不久，士兵获悉，只有一个住在这里的年轻人，有能那样本领。

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The title unfolds, like a pair of outstretched arms, as if trying to grasp the width of a world that was, in Defoe's day, dramatically expanding its sense of possibility.

WSJ: Fiction as Authentic as Fact | Robinson Crusoe | Daniel Defoe | Masterpiece by Danny Heitman

One is a pair of long outstretched arms.

BBC: Where the Marquis de Sade and Pierre Cardin meet

He directed us to stand with our heels on a pair of marks on the floor, hold our arms out from our sides and stand still for roughly five seconds while the Kinect cameras mounted all around us snapped away.

ENGADGET: Styku virtual fitting room body scan (video) Hands-on