2015-04-24 BBC:星光七纪元-28
时间：2019-01-23 作者：英语课 分类：探索与发现2015年
英语课
And takes dedication 1 perseverance 2 and a love of the thrill of the chase, not just any kind of astronomer 3 but a supernovae hunter, and one with perfect timing 4.You know usually nothing much happens in astronomy, stars live for millions or billions of years, so everything is the same from one night to another, but not with a supernovae, it brightens dramatically over the course of just one night, it happens on a human time scale.
Supernovae are so rarely seen in our own galaxy 5, the milky 6 way that you need to peer much much further to find many more, you need to hunt for them in other galaxies 7. Professor Alex F uns one of the most successful search teams on Earth for doing just that, in their best year they discovered almost 100.
There is no calendar telling you where and when to look for supernovae, you just look kind of randomly 8 at as many galaxies as you can repeatedly and occasionally a supernova will go off in one of them, i mean they are rare only two or three supernovae per galaxy per century, so you really have to scan thousands of galaxies in order to increase your odds 9 of finding a few each year. This robotic telescope automatically takes pictures of over 1000 galaxies a night, and it compares those new pictures with pictures of the same galaxy it had taken previously 10, if there are something new in one of the new pictures, like a new star, that's an excellent candidate supernova, that's the kind of thing that we want to keep studying.
n.奉献，献身，致力，题献，献辞
- We admire her courage,compassion and dedication.我们钦佩她的勇气、爱心和奉献精神。
- Her dedication to her work was admirable.她对工作的奉献精神可钦可佩。
n.坚持不懈，不屈不挠
- It may take some perseverance to find the right people.要找到合适的人也许需要有点锲而不舍的精神。
- Perseverance leads to success.有恒心就能胜利。
n.天文学家
- A new star attracted the notice of the astronomer.新发现的一颗星引起了那位天文学家的注意。
- He is reputed to have been a good astronomer.他以一个优秀的天文学者闻名于世。
n.时间安排，时间选择
- The timing of the meeting is not convenient.会议的时间安排不合适。
- The timing of our statement is very opportune.我们发表声明选择的时机很恰当。
n.星系；银河系；一群(杰出或著名的人物)
- The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
- The company has a galaxy of talent.该公司拥有一批优秀的人才。
adj.牛奶的，多奶的；乳白色的
- Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
- I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。
星系( galaxy的名词复数 )； 银河系； 一群（杰出或著名的人物）
- Quasars are the highly energetic cores of distant galaxies. 类星体是遥远星系的极为活跃的核心体。
- We still don't know how many galaxies there are in the universe. 我们还不知道宇宙中有多少个星系。
adv.随便地，未加计划地
- Within the hot gas chamber, molecules are moving randomly in all directions. 在灼热的气体燃烧室内，分子在各个方向上作无规运动。 来自辞典例句
- Transformed cells are loosely attached, rounded and randomly oriented. 转化细胞则不大贴壁、圆缩并呈杂乱分布。 来自辞典例句
n.让步，机率，可能性，比率；胜败优劣之别
- The odds are 5 to 1 that she will win.她获胜的机会是五比一。
- Do you know the odds of winning the lottery once?你知道赢得一次彩票的几率多大吗？
adv.以前，先前（地）
- The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
- Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。