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2024年6月29日发(作者：matlab中imread函数用法)
CRAZY ENGLISH
环球视点
阅读
斤
环球视点
°
The signals from the aliens
外！人$信&
By Lisa Grossman / 黄菊(译）
语篇导读
宇宙中到底有没有外星人？如果有，外星人会是什么样子的呢？真的和电视里的科幻片描述的一样吗？如
果没有，为什么有新闻说见到过外星人呢？本文将开启咱们的解读外星人之旅，看看究竟有没有外星人，外星
人跟我们又有什么关系。
If signals from an alien ever reach Earth, the aliens may already
be dead. Physicist Claudio Grimaldi and his workmates worked out
the area of the galaxy that should be filled with alien signals at a giv
en time.
The team, which includes Frank Drake (now a professor retired
from the SETI Institute in Mountain View, Calif, and the University of
California, Santa Cruz), thought civilizations are born and die at a
constant rate. When a civilization dies out, the signals it had sent
continue traveling like round ripples on a lake. Part of the Milky Way should be filled with these ghost signals.
If the civilization lasted less than 100,000 years—the time it takes to cross the galaxy—then the possibili
ties of the signals reaching Earth while the civilization is still spreading are reducing, the researchers reported
on February 27. Humans, for example, have been using radio waves for only about 80 years, so our radio
waves cover less than 0.001 percent of the Milky Way.
‘ If the civilization came out from the other side of the galaxy,
when the signal arrives here, the civilization will already be gone,”
says Grimaldi.
Surprisingly, the team also worked out that the average number
of E.T. signals crossing Earth at a given time should be the same as
the number of civilizations spreading at that time—even if the civi
lizations we hear aren$t the same ones presently spreading. Grimaldi
is now working on a paper about what it means that we $ve found
none so far.
苣英语
V
13
阅读
环球视点
CRAZY ENGLISH
ripple /"rip($)l/ !■波纹；J连箭
信号；暗号
reduce /ri_dju:s/ %■减少;缩小
average /_!v($)rid3/ &#:平均的；普通的
presently /_prez($)ntli/ a#%■目前；不久
♦词语积淀
signal /_sign($)l/
galaxy /'g!l$ksi/ !.银河；银河系
civilization /■sivilai"zeij$n/ !■文明；文化
constant /_kDnst($)nt/ ac/y:不变的;恒定的
♦典句赏析
1. ...then the possibilities of the signals reaching Earth while the civilization is still spreading
……那么，尽管该文明仍然在传播，其信号传达到地球的可能性却正在减小……
while作为连词，引导的是让步状语从句，意为“尽管，虽然”；the possibilities of是固定词组搭配，意为“……的
可能”。
【即时尝试】尽管没有成功的可能，他还是在努力。
2. Part of the Milky Way should be filled with these ghost signals■这些虚假的信号应该会遍及部分银河。
with…是固定词组搭配，意为“用……填满……”。该句中的be filled是“be+动词过去分词”的结构，属于被
动语态形式，表示“被……填满”。
【即时尝试】他的大脑里满是知识。
3. Grimaldi is now working on a paper about what it means that we’ve found none so far. Grimaldi 目前正
在撰写一篇文章，阐述我们 发现的到底意味着什么。
work on意为“继续工作，从事于.......”；so far意为“到目前为止*，通常与现在完成时连用。句子“what it means
that we’ve found none so far*作介词about的宾语，在这个宾语从句中，it是形式主语，真正的主语是that引导的
从句，以避免句子“头重脚轻”。
【即时尝试】到 为止，她还没意识到从事自己喜欢的工作很难。
(答案见63页）
译文助读 ------------------------------------------------------------------------
如果外星人的信号到达了地球，发出信号的外星
人可能早已经死了。物理学家Claudio Grimaldi和他的
同事计算出了在给定时间内，外星人的信号在银河里
可能覆盖的面积。
Frank Drake(现在是一名退休教授，曾任职于加
利福尼亚州山景城SETI研究院及位于圣克鲁兹的加
利福尼亚大学)也是该研究小组的一员，他们认为各种
文明以不变的频率产生和消亡。当一种文明灭绝后，它
已经发出的信号 继续传播，就犹如湖面上一圈圈的
涟漪一样。这些虚假的信号应该会遍及部分银河。
2月27日，据研究人员报道，如果这种文明持续不
到100,000年—它跨越银河的时间—那么，尽管该
文明仍然在传播，其信号传达到地球的可能性却正在
减小。如，人 80年，所以我们的
无线电波的覆盖面积不到银河总面积的0.001%。
Grimaldi说：“如果这种文明是从银河对面传过来
的，当信号到达这里时，该文明已经不复存在了。”
出人意料的是，该研究小组还计算出，在特定时间
内，外星人（E.T.)信号传到地球上的
时正在传播的文明种类的数值——
文 明 信 号
Grimaldi
是
在 一 文 ，
在 传 播 的 同 种 文 明
们
该于当
发 的
发
即使我们所听到的
现的到底意味着什么。
14 親#
CRAZY ENGLISH
参考答案
八 八 八
核心密码
"1. All the books there, which have beautiful pic
tures in them, were written by him.
2. You like sports while I prefer music.
#1. I thin—that) working with you is a pleasure.
2. Zhang Hua often keeps fit by playing football.
同龄世界
—"1-5 ADADB
二"1. doesn$t do
2. Whose is
3. Did; have any
4. could he
5. What a; it is
%球视点
!理解自测1.C 2.D
词句微练
1. too; to
2. because of
3. with; help
4. be built
5. give you some advice
©理解自测1-3CBB
词句微练
1. when
2. get stuck
3. ticked by
4. untied his feet
5. without hesitation; pulled out
励志人生
〇1. While there are not the possibilities of suc
cess, he is still working hard.
2. His brain is filled with knowledge.
3. So far, she has not realized that it is very diffi
cult to work on what she likes.
©理解自测1"3 BDD
词句微练
1. The number of
2. bring back
3. In order to
4. According to
5. since; got
#1. What he said had nothing to do with what
he did.
2. They have access to health care when they
need it.
3. We made it a rule not to talk or play in class.
文化风俗
1. It is one of the most famous and popular
English songs in 2018.
2. This is a new dress that I bought on line when
I stayed at home.
3. I didn$t come home in time because of the
heavy snow.
"1. I feel like finishing reading the book by ten
this evening.
2. Tom made his brother cry, so he was made to
say sorry to her brother by his mother.
3. One of his weaknesses is smoking too much.
1. He lives in a room whose window faces
south.
2. It is because he was ill that he didn$t come to
school yesterday.
3. Not only the students but also the teacher
was against the plan.
苣英语
S
3
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