Don't throw an arm or leg over the top of him.
不要把胳膊和或脚丫伸到他身上。
You'd never throw a ball with your entire arm locked in one place.
你扔球出去的时候不可能使整个手臂固定在一个位置。
The throw is initiated by the tipper arm.
投掷动作由手臂端发起。
For example, before you can throw a ball you must first swing your arm backwards.
例如，在你扔一个球时你必须引手臂到身后。
He picked up a handful of gravel and drew back his arm to throw.
他抓起一把石子，扬起胳膊就要扔。“住手，彼得。”
He picked up a handful of gravel and drew back his arm to throw.
他抓起一把石子，扬起胳膊就要扔。“住手，彼得。”
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