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我们家中所使用的无线手提工具，比如真空吸尘器、手电筒、钻头和锯，都来自于早期太空项目里的技术。
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.
只有电动机变得先进时，真空吸尘器才会普遍使用。
It was only when electric motors became advanced that vacuum cleaners became common.
这是一种小外径的电镀线，很柔软，最初是用于真空吸尘器，但现在在许多不同产品中使用。
Jacketed wire, very flexible and initially used for vacuum cleaners but now used on many different types of products.
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