In the texture category, the researchers tested metaphors such as "having a rough day" and "using coarse language," by giving people a puzzle to solve that was either smooth or covered in sand paper.

在有关质地的调查中，研究人员通过给人们猜一个或是表面光滑，或是用砂纸包裹的谜语，来测试诸如“不舒服的一天”、“讲粗鲁的话”等比喻。

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Like a sand dune, the pavilion appears smooth on the side that bears the full force of the wind and rough and textured on the other side.

和沙丘一样，阿联酋馆的一面看起来很光滑，可以承受巨大的风力，而另一面则相对粗糙。

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For both materials (especially HD80), rough up the glue surface first with coarse sand paper, then apply a coat of cement and let it dry.

为两种材料(尤其是hd80)，粗糙了胶的表面首先与粗砂的文件，然后申请一件外套，水泥，让它干。

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The inflatable skirt keeps the cart 9 inches off the ground, letting you float over rough, sand and ponds.

FORBES: Just Like Bubba Watson, You Too Can Own A Hover Golf Cart

Witness the coexistence of rough planes that incorporate sand and suavely brushed passages, or of raucous invocations of leaves and fruit, and illusionistic wood grain and marble (an echo of his early training as a master decorator, as well as of Cubist collage).

WSJ: Reaching Out to Touch Space | Georges Braque and the Cubist Still Life | Kemper Art Museum | By Karen Wilkin

Andrew Ledford against court-martial charges that he allowed his men to beat Jamadi, says the CIA did ask the SEALS to rough up detainees at the sand pit.

NPR: Q & A: The CIA's Record on Detainee Treatment