这篇文章主要讲的是为了拥挤的太空实现减少碰撞的危险，要减少这样的危险首先要知道将会发生什么?要有预测的能力。而且要把信息集中起来，总结关于太空的信息减少碰撞的几率。美国进入中国上空的卫星是为了保护他们自己。下面前程百利小编带大家一块看一下这篇托福听力背景材料中出现的生词和疑难句，正在备考托福听力的同学可以参考一下。
“My area of operations is 73 trillion(万亿) cubic miles(立方米).” Gen. John Hyten. He leads the U.S. Air Force Space Command. He’s counting all the space between the earth’s surface and geosynchronous orbit(同步轨道), about 22,200 miles up at the equator. General Hyten visited Scientific American’s offices February 26th. One area of discussion was the task of keeping the busy space above our planet free of dangerous and costly(代价高) collisions(碰撞).
“You have to know exactly what is going on, exactly when it’s going on, you have to able to predict potential hazardous(潜在有危险的) collisions and you have to be able to predict threats. And you have to do that real time. So one of the reasons that we’re building capabilities (能力)like improved ground-based(路基的) telescopes(望远镜)…we’re building space-based space surveillance systems(检测系统)…and then we have geosynchronous(对地同步的) space situational awareness(态势感知) program satellites(卫星)…that will move around the geosynchronous belt, giving us exquisite (精致的)understanding of exactly what is in the geosynchronous belt, which is the most expensive real estate.
“Then the other thing the United States has decided to do is that we’re going to take all that information and we’re going to bring it all together and we’re going to process it, we’re going to do it with our allies…partner that capability, and then if we see any collision(碰撞), we’re going to tell whoever that owner/operator(经营者) is, whether it’s us, the commercial sector(商业部门), Inmarsat, Intelsat, or even if it’s a Chinese or Russian satellite, we’re going to tell them.
“And one of the interesting things that’s happened in the last few months is that we used to have to tell the Chinese through the State Department, where we would see a potential collision(碰撞) involving a Chinese satellite, we’d be concerned and we’d provide the information, we’d send it to the State Department, the State Department would go to the Chinese ministry and the Chinese ministry would then go, who knows what happened after that. So a few months ago, the Chinese came and said we’d like to be able to receive that data directly into our operations center. And we said, we’ll do that.
“So four or five times now we’ve had potential Chinese issues and we send it right into China. And people get concerned about, are you giving away critical information. No, we’re protecting ourselves. We’re protecting that environment. I can’t tell you how bad debris in space would be, especially in the geosynchronous belt. We cannot have debris(碎片) in that orbit. So we have got to make sure we do that. So it’s in our interest.”
疑难词汇：
trillion cubic mile 亿立方米
geosynchronous 对地球同步的;与地球位置相对不变的
potential hazardous collisions 潜在的碰撞危险
surveillance 监督监视
exquisite adj. 精致的;细腻的;优美的，高雅的;异常的;剧烈的n. 服饰过于讲究的男子
debris 碎片;残骸
长难句解析：
1. “And one of the interesting things that’s happened in the last few months is that we used to have to tell the Chinese through the State Department, where we would see a potential collision involving a Chinese satellite, we’d be concerned and we’d provide the information, we’d send it to the State Department, the State Department would go to the Chinese ministry and the Chinese ministry would then go, who knows what happened after that.
难句类型：
That引导的从句：where引导的地点状语从句;who引导的主语从句
句子主干：
one of the interesting thing is we used to have to tell the Chinese
难句拆分：
第一个that引导的是定语从句修饰one of the interesting things;第二个that引导的是宾语从句;where引导的是地点状语从句修饰the State Department;who knows引导主语从句，在句子中作主语。
好了，以上就是前程百利小编为大家整理的托福听力背景材料中学单词+疑难句之太空安全措施的内容，希望在备考的路上助大家一臂之力。最后，小编祝大家在托福考试中取得好成绩！
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