groundsheets是什么意思？

groundsheets

• n. （露营时铺地用的）防潮布( groundsheet的名词复数 )；

柯林斯高阶英汉双解学习词典释义

• N-COUNT
  （露营时用的）铺地防潮布
  A groundsheet is a piece of waterproof material which you put on the ground to sleep on when you are camping.