该小组研制出一种级联- 真正的瀑布形态- 纳米级的材料，电子就穿梭在可见光和红外层之间。
The team engineered a cascade -- really a waterfall -- of nanometers-thick materials to shuttle electrons between the visible and infrared layers.
在前一个作为首席科学顾问的角色中，我穿梭在全世界告诉其他国家有关该承诺，就像把一个赌注仍在桌上一样。
In my former role as chief scientific adviser, I travelled the world to tell other countries about this commitment, throwing it on the table like a bargaining chip.
他说：“与目前为穿梭机和国际太空站研发的食物系统相比，该计划需要更繁杂的食品加工和膳食储备。”
This scenario involves much more food processing and meal preparation than the current food system developed for the space shuttles and the International Space Station”， he said。
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