ball arm

基本解释

With a roll ball rocking arm and balance tray. It is a smart design and convenient to be installed quickly.
備有流滾珠式駐持搖臂及平衡托架，設計巧妙，安裝簡便，快捷。
Award a penalty kick: there is no such thing as 'ball to arm' in this situation: the player must take the consequences of his actions.
判罸點球。這不是一個所謂的“球打手”的狀況，所以這名後衛衹能對他自己的行爲自食其果。
The invention is characterized in that the cabin storing ball arm is turned to place corresponding to import and export of tubular bag, which is convenient for users to choose;
其優點是，把存放所需球杆的艙位轉到與筒形袋躰的進出口對應的位置，方便使用者選取；
ip.com

And I stuck out my hand and the ball bent my arm back.
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To use an apt football analogy, just a month ago George Allen was in the open field gliding towards the end zone with the ball under his arm and a smile on his face.
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