In this article, it is emphasized, through explanations and analysis that the correct position of head and the free arm plays an important part in casting techniques.

通过本篇的叙述与分析，进一步强调头与非投掷臂的正确动作，在投掷技术中的重要意义。

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He wrenched his arm free.

他把手臂挣脱开来。

《柯林斯英汉双解大词典》

He pulled his arm free, and strode for the door.

他抽出他的胳膊摆脱束缚，大步朝门走去。

《柯林斯英汉双解大词典》

Holladay, meanwhile, turns collision detection on its head to funnel an object into place, such as balancing a delicate object with a free arm before setting that object down.

ENGADGET: MIT algorithms teach robot arms to think outside of the box (video)

The suit dates back to September 2006, when Urban Outfitters, its wholesale arm and its Free People subsidiary sued BCBG and distributor Street Beat Sportswear Inc.

FORBES: BCBG Sanctioned In Urban Outfitters' Trademark Suit

"I'm very into the Harley myth, " says Alvin LaSalle, 63, an electrical contractor in Cathedral City, California, who has Harley's trademark wings and the word "Free" tattooed on his arm.

FORBES: Cult brands