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托福听力如何备考 托福听力如何进行重点学科的训练提升( 二 )

生活百科托福听力


Some astronomers work on purely theoretical problems and never use a telescope at all.
有些天文学家从事于纯粹的理论问题 ， 并且根本就从来都不使用望远镜 。
You might not know how rarely images are viewed directly through telescopes.
你可能不知道影像被直接通过望远镜观察是多么罕见 。
The most common way to observe the skies is to photograph them.
最常见的观察天空的方式是去拍他们的照片 。
The process is very simple.
这个额过程很简单
First, a photographic plate is coated with a light-sensitive material.
首先 ， 一个照相底板被一种光敏的材料覆盖 。
The plate is positioned so that the image received by the telescope is recorded on it.
这个底片被放置好以便望远镜接收图像并录制在上面
Then the image can be developed, enlarged, and published so that many people can study it.
那么图像能够被开发 ， 放大 ， 并且出版 ， 所以很多人能研究它 。
Because most astronomical objects are very remote, the light we receive from them is rather feeble.
因为大多数天体都很遥远 ， 我们从他们那里接受到的光相当的微弱 。
But by using a telescope as a camera, long time exposures can be made.
但通过使用望远镜当相机 ， 长时间的曝光能够被制造出来 。
In this way, objects can be photographed that are a hundred times too faint to be seen by just looking through a telescope.
这样 ， 百倍微弱的 ， 仅仅通过望远镜观察而看不清楚的天体也能被拍摄下来 。
托福听力练习对照文本
Before we start our first lab, I'd like to tell you a little bit about the workbook we'll be using.
在我们开始我们第一次实验室(活动)之前 ， 我想要告诉你们一点关于我们将要使用的工作手册(的注意事项)
The first thing I'd like to point out is that the workbook contains a very large amount of material, far more than you could ever handle in a single semester.
我想指出的第一件事是这个工作手册包含非常巨大的材料数量 ， 远比你们在一个学期内能够运用的多 。
What you're supposed to do is choose the experiments and activities that you want to do—within a certain framework, of course.
你们应当做的是选择你想做的实验和活动—当然 ， 要在一个确定的框架内
Part of my job is to help you make your choices.
我工作的一部分是帮你们做出你们的选择 。
Next, I'd like to mention that in each workbook chapter, there are usually two subsections.
接下来 ， 我想提及在工作手册的每一个章节 ， 通常会有两个副章节 。
The first is called "Experiments" and the second is called "Activities."

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