新型材料:比纸薄比钢硬。PAPER is easy to tear (撕破). However, Australian scientists made a super material (超级材料). It is even thinner than paper, but it is stronger than steel (钢). The material is light ……
它比纸薄比钢硬Australian scientists (澳大利亚的科学家) made a super material (超级材料). It is light. It is thinner (更薄) than paper, but it is stronger than steel (钢). People can use it to make cars and planes. ……
中报二十一世纪(北京)传媒科技有限公司版权所有,未经书面授权,禁止转载或建立镜像。
主办单位:中国日报社 Copyright by 21st Century English Education Media All Rights Reserved 版权所有 复制必究
京ICP备2024066071号-1 京公网安备 11010502033664号