sheet ground 板层矿床 ; [地质] 板状地层
同义词： groundsheet ground cloth
以上来源于: WordNet
N-COUNT A groundsheet is a piece of waterproof material which you put on the ground to sleep on when you are camping. 防潮布 [英国英语]
Indoors, you put a white sheet on the ground, spray some insecticide on walls and ceilings, and the mosquitoes fall on your feet one by one.
在室内，你在地上放一个白床单，然后在天花板和墙上喷上一些杀虫剂，蚊子就一个一个地掉在你的脚边。
Grain is often heaped on the ground and covered with a sheet: no wonder the rats get at it.
收获的粮食通常就堆在地上，用布盖起来：难怪老鼠会吃粮食。
Indoors, you put a white sheet on the ground, spray some insecticide on walls and ceilings, and the mosquitoes literally drop at your feet.
在室内，你在地上放一个白床单，然后在天花板和墙上喷上一些杀虫剂，蚊子就一个一个地掉在你的脚边。
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