Others are more optimistic, especially in the light of advances in engineering and materials science since the last attempt - notably in lightweight carbon fibre composites and energy-dense batteries.
其他人比他乐观得多，尤其是自从上次尝试以来，我们在工程和材料学方面又有了更多启发——值得一提的是我们发明了轻质碳纤维化合物和高能量密度电池。
Others are more optimistic, especially in the light of advances in engineering and materials science since the last attempt - notably in lightweight carbon fibre composites and energy-dense batteries.
其他人比他乐观得多，尤其是自从上次尝试以来，我们在工程和材料学方面又有了更多启发——值得一提的是我们发明了轻质碳纤维化合物和高能量密度电池。
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