Grip of belt surface needs to be big enough to hold the product without damaging it, thus, pressure on the rolls has to be delicate.
皮带表面的抓地力，需要足够大，持有主张而不受破坏它的产品，从而，轧辊上的压力细腻。
His only equipment, apart from rubber-soled boots, was a bag of chalk slung at the back of his belt, into which he dipped his hands to dry the sweat and improve his grip.
如果不算纯胶的攀登鞋，他唯一的装备就只有挂在腰带后面的那袋滑石粉了；手若是出汗了，伸进去蘸一下弄干来增加抓力。
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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