The cordless, hand-held tools we use in our homes, such as vacuum cleaners, flashlights, drills and saws came from the technology of these early space programs.
2017年12月四级真题(第二套)听力 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
手电筒;手电
A flashlight is a small electric light which gets its power from batteries and which you can carry in your hand.