"If Earths are common, then the first generation of space telescopes with coronagraphs would get a spectrum and ID signs of life, " she said.
“如果类地行星很常见，那么第一代配备日冕仪的太空望远镜就能捕获光谱并识别生命迹象，”她说。
Though many who bought it had to hack their computers to store music on it, the first-generation iPod was a stylish MP3 player boasting a 10-hour battery life and space for 1,000 songs.
虽然当时的购买者不得不“黑”掉电脑才能在上面存储音乐，但第一代iPod是一个时尚精致的MP3音乐播放器，它有10小时的续航时间及能够存储1000首歌的空间。
Russia's new fifth-generation PAK FA T-50 fighter jet performed its first demonstration flight at MAKS-2011 international air and space show in the town of Zhukovsky, near Moscow.
在莫斯科近郊的茹可夫斯基市举行的俄罗斯2011年国际航空航天展上，俄第五代喷气式战机t- 50进行了首秀。
The first part of the system, the Oxygen Generation System, was launched on space shuttle Discovery in July 2006.
第一部分是氧气生成系统，已经在2006年送到空间站。
The first part of the system, the Oxygen Generation System, was launched on space shuttle Discovery in July 2006.
第一部分是氧气生成系统，已经在2006年送到空间站。
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