Purpose: Study the attacking loop with backhand reverse side of the penholder racket andbackhand tennis grip.

研究目的：研究乒乓球直拍横打回击弧圈球技术。

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And whether they manage to reverse Afghanistan's downward spiral will depend, in part, on the degree to which Pakistan is able and willing to get a grip on its lawless tribal belt.

以及他们是否成功地扭转阿富汗螺旋式下降将在部分程度上取决于，巴基斯坦能够并且愿意控制其混乱的部落地区。

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And whether they manage to reverse Afghanistan's downward spiral will depend, in part, on the degree to which Pakistan is able and willing to get a grip on its lawless tribal belt.

以及他们是否成功地扭转阿富汗螺旋式下降将在部分程度上取决于，巴基斯坦能够并且愿意控制其混乱的部落地区。

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