各位同学们,为了督促帮助大家持续提升英语能力,培君老师们特意给大家准备了托福每日一包。每天覆盖听说读写内容,坚持完成两周以上,就能见到自己的英语能力不断上涨哟。
1.听写包答案:
One of the most important was done by the astronomer George Abell. Abell completed his survey in 1958.
It added considerably to the map made by Shapley and Ames. In fact, his map had over 2700 clusters of galaxies.
That's 2700 clusters of galaxies! Not just galaxies.
But there’s another aspect of Abell’s work that makes this map so valuable to astronomers.
He introduced a classification scheme for the galaxy clusters.
Now, surveys completed since Abell’s have catalogued additional galaxies and surveyed more outer space, but no one has improved upon Abell’s classification scheme.
In fact, the Abell catalogue is used as a starting point for astronomers who study these objects.
One of the reasons his scheme has been so widely accepted is because of his sample size.
With all the clusters in his sample, he could determine the different characteristics of clusters.
And these characteristics form the basis of his classification scheme.
Now, two of the characteristics crucial to his classification were richness and symmetry.
So what did he mean by richness? Well, basically it refers to the number of galaxies there are within a cluster.
最重要的调查之一是由天文学家George Abell完成的。Abell在1958年完成了他的调查。
它对Shapley和Ames制作的地图进行了大量补充。事实上,他的地图上有超过2700个星团。
那可是2700个星团啊!不只是星系。
但是使得Abell完成这个地图的成果对天文学家来说如此宝贵的还有另一个方面。
他提出了星团的一个分类体制。
自Abell之后完成的研究编录了额外的星系,并且探测了更外层的太空,但是没人能对Abell的分类体制加以改进。
事实上,Abell的编录被研究这些物体的天文学家用作了一个起始点。
他的体制被如此广泛接受的原因之一是因为他的取样规模。
借助样品中所有的星团,他能确定这些星团之间不同的特征。
而这些特征形成了他的分类体制的基础。
对他的分类至关重要的两个特征是丰富程度和对称性。
那么丰富程度是什么意思呢?它主要是指一个星团内的星系数量。
2.阅读包答案:
他还宣称,自己在深入理解冗长且完全抽象的 观点方面的能力很有限,所以他认定自己在数学方面不会有成就。
3.写作包答案:
In a sense, Chinese is a very old language, and its earliest characters date back nearly four thousand years ago. During their long history of development, Chinese characters have evolved into many different script forms, such as the Seal script, Clerical script, Regular script and Running script. Chinese calligraphers usually render their Chinese characters in ways that exaggerate the form to yield artistic beauty, such as those in stone inscriptions seen in tourist resorts. Chinese calligraphy is a subject of artistic study. As your interest in Chinese character system increases in the days to come, we will introduce in due time the different schools of Chinese calligraphy, and how to appreciate the artistic beauty of Chinese calligraphy.
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