填空题

"Gecko tape" is a technology that proved to be an alternative to ______ when it’ is put into the market.

【参考答案】

Velcro
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The result was Velcro, a product that was arguably more than ______years in the making, since that is how long the natural mechanism that inspired it took to evolve.
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Engineers can perfect the mechanism to all sorts of complicated real-world problems.
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