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31. Although apparently rigid, bones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact.31.骨头看起来是脆硬的，但它也有一定的弹性，使得骨骼能够承受相当的打击。32. That xenon could n
互补品的英文：complement goods参考例句：A high negative cross-elasticity between two goods means that they are close complaints.存在很高的负值，就说明这两种商品是很密切的互补品。complement是什么意思：v. 补充，补足n. 补充
Chinese and American scientists have jointly developed a form of ultra-strong, lightweight carbon that is as hard as a diamond yet elastic like rubber and electrically conductive.In simple terms, the material combines th
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