Drop-back sand unit 落砂单元
oil no-back sand mold 油改性树脂自硬砂型
Fred sand back 弗雷德
sand back 沙丘
back up sand 充填砂
back filled sand 回填砂
People have planted a great many trees in order to hold back wind and sand in the desert.
为了阻挡沙漠中的风沙,人们种了很多树。
When I came up sputtering, Jim smiled approvingly and we swam a few strokes to the beach, lay on the hot sand for awhile, and then swam back across the pool to do it again.
当我奋力跳入潭中后,吉姆赞许地冲我微笑,我们划了几下水游到了沙滩上,在热沙子上躺了一会儿,然后游回对岸,再把这种活动做一遍。
Though just an ordinary white towel at first glance, when turned over it has a photo of sand printed on the back that will camouflages and protects your valuables when you go swimming.
虽然第一眼看上去,它只是个普通的白色毛巾,但在另一面印上了沙子的图案。 这样,你去游泳时,把值钱的东西盖在毛巾下,就能有效伪装,保护你的财产。
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