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Tool，Device，Instrument，Gadget，Utensil
工具。
🚩tool是指“任何可以用手拿住的工具、器具、用具，可以帮助人们完成某种工作，如制作或者维修某种东西”，柯林斯解释为A tool is any instrument or simple piece of equipment that you hold in your hands and use to do a particular kind of work. For example, spades, hammers, and knives are all tools.。
如：
I find the best tool for the purpose is a pair of shears.
我发现做这件事最得力的工具是一把大剪刀。
🚩device是“用于某种特目的东西，装置，一起，设备”，柯林斯解释为A device is an object that has been invented for a particular purpose, for example for recording or measuring something.。它用法比较正式。
如：
an electronic device that protects your vehicle 24 hours a day24小时保护车辆的电子装置
a device that could measure minute quantities of matter能够测量微量物质的设备
🚩instrument是指“器械，仪器，器具，它尤其指精密或者科学工作用的仪器”，柯林斯解释为An instrument is a tool or device that is used to do a particular task, especially a scientific task.。
如：
instruments for cleaning and polishing teeth清洗和抛光牙齿的器械
The environment itself will at the same time be measured by about 60 scientific instruments. 同时环境本身将由大约60种科学器械来测量。
🚩gadget是指“小工具，小器具，精巧的小玩意；有时候暗含的意思是比较复杂且没有必要”，柯林斯解释为A gadget is a small machine or device which does something useful. You sometimes refer to something as a gadget when you are suggesting that it is complicated and unnecessary.。
如：
kitchen gadgets including toasters, kettles and percolators烤面包机、水壶、滴滤式咖啡壶等厨用小家电
the latest gadget for the technology obsessed: pocket-sized computers that you write on with a pen. 面向科技发烧友的最新玩意儿：可在上面用笔书写的袖珍电脑
🚩utensil常常指“家庭用具，器皿”，柯林斯解释为Utensils are tools or objects that you use in order to help you to cook or to do other tasks in your home.。
如：
utensils such as bowls, steamers and frying pans碗、蒸锅、煎锅等用具
The best carving utensil is a long, sharp, flexible knife. 最好的雕刻工具是锋利而柔韧的长刻刀。
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