六级While that may make suborbital travel safer, it would add significant cost and complexity to an emerging industry that has until now operated largely as the playground of billionaires and dreamy engineers.
虽然这可能会使亚轨道旅行更加安全,但这将为一个新兴行业增加巨大的成本和复杂性,该行业迄今为止主要是亿万富翁和梦幻工程师的游乐场。
2015年12月阅读原文
六级But more recently, companies have begun to plan more affordable " suborbital " flights — brief ventures just to the edge of space's vast darkness.
但最近,公司开始计划更经济实惠的“亚轨道”飞行——在太空广阔黑暗的边缘进行短暂的冒险。
2015年12月六级真题(第二套)阅读 Section C
未经许可,严禁转发。QQ交流群:688169419