...工程;水泥地面;地面起砂;成因;控制手段 [gap=716]Keywords: building engineering; The cement ground; The ground up sand; Cause; Control means ...
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As water flows along the ground, it picks up sand, pebbles, even boulders.
雨水沿着地面流动时,夹带了泥沙、卵石,甚至大圆石。
In most cases, extracting oil involves chopping down the forest that blankets the region, draining the boggy ground, stripping off the topsoil and literally digging up the oily sand below.
在大多数情况下,要从油沙中提炼出石油需要先把覆盖该地区的森林砍掉,排干地面的水分,去掉表层土然后当然就是把地下的油沙挖出来。
A good vacuuming will get up the sand and other loose debris from your car's carpeting, but it won't do diddly for stains or ground-in dirt.
用真空吸尘器好好打扫的话可以把沙土和其他一些碎屑吸出来,但它对染色和污垢就毫无办法了。
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