💬 新概念英语第三册
共 1411 条英汉对照例句 · 第 42 页
Lesson 55 From the earth Greetings
Whether a planet can support life depends on the size and brightness of its star, that is its 'sun'.
一颗行星是否能够维持生命取决于它的恒星——即它的“太阳”——的大小和亮度。
Lesson 55 From the earth Greetings
Imagine a star up t twenty times larger, brighter, brighter and hotter than our own sun.
设想一下，一颗恒星比我们的太阳还要大，还要亮，还要热20倍，
Lesson 55 From the earth Greetings
A planet would have to be a very long way from it to be capable of supporting life.
那么一颗行星为了维持生命就要离开的它的恒星非常远。
Lesson 55 From the earth Greetings
Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop.
反之，如果恒星很小，维持生命的行星就要在离恒星很近的轨道上运行，而且要有极好的条件才能使生命得以发展，
Lesson 55 From the earth Greetings
But how would we find such a planet? At present, there is no telescope in existence that is capable of detecting the presence of life.
但是，我们如何才能找到这样一颗行星呢？现在，没有一台现存的望远镜可以发现生命的存在。
Lesson 55 From the earth Greetings
The development of such a telescope will be one of the great astronomical projects of the twenty-first century.
而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。
Lesson 55 From the earth Greetings
It is impossible to look for life on another planet using earth-based telescopes.
使用放置在地球上的望远镜是无法观察到其他行星的生命的。
Lesson 55 From the earth Greetings
Our own warm atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets.
地球周围温暖的大气层和望远镜散出的热量使得我们根本不可能找到比行星更小的物体。
Lesson 55 From the earth Greetings
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
Lesson 55 From the earth Greetings
A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system.
望远镜要放置在木星那样遥远的行星上才有可能在外层空间搜寻生命。因为我们越是接近太阳系的边缘，尘埃就越稀薄。
Lesson 55 From the earth Greetings
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.
一旦我们找到这样一颗行星，我们就要想办法将它的恒星射过来的光线遮暗，这样我们就能彻底“看见”这颗行星，并分析它的大气层。
Lesson 55 From the earth Greetings
In the first instance, we would be looking for plant life, rather than 'little green men'.
首先我们要寻找植物，而不是那种“小绿人”。
Lesson 55 From the earth Greetings
The life forms most likely to develop on a planet would be bacteria.
行星上最容易生存下来的是细菌。
Lesson 55 From the earth Greetings
It is bacteria that have generated the oxygen we breathe on earth.
正是细菌生产出我们在地球上呼吸的氧气。
Lesson 55 From the earth Greetings
For most of the earth's history they have been the only form of life on our planet.
在地球上发展的大部分进程中，细菌是地球上唯一的生命形式。
Lesson 55 From the earth Greetings
As Earth-dwellers, we always cherish the hope that we will be visited by little green men and that we will be able to communicate with them.
小绿人来拜访我们，而我们可以和他们交流。
Lesson 55 From the earth Greetings
But this hope is always in the realms of science fiction.
但是，这种希望总是只在科幻小说中存在。
Lesson 55 From the earth Greetings
If we were able to discover lowly forms of life like bacteria on another planet, it would completely change our view of ourselves.
如果我们能够在另一颗行星上找到诸如细菌的那种低等生命，那么这个发现将彻底改变我们对我们自己的看法。
Lesson 55 From the earth Greetings
As Daniel Goldin of NASA observed, 'Finding life elsewhere would change everything.
正如美国国家航空和宇宙航空局的丹尼尔。戈尔丁指出的“在其他地方发现生命会改变一切。
Lesson 55 From the earth Greetings
No human endeavor or thought would be unchanged by it.
任何人类的努力和想法都会发生变化。”
Lesson 56 Our neighbour, the river
The river which forms the eastern boundary of our farm has always played an important part in our lives.
形成我们农场东部边界的一条河流一直在我们生活中发挥着重要作用。
Lesson 56 Our neighbour, the river
Without it we could not make a living.
要是没有这条河，我们就无法生存下去。
Lesson 56 Our neighbour, the river
There is only enough spring water to supply the needs of the houses, so we have to pump from the river for farm use.
泉水只能满足家庭生活用水，因此我们必须从河里抽水以用于农业生产。
Lesson 56 Our neighbour, the river
We tell river all our secrets.
我们向那条河倾诉我们的秘密。
Lesson 56 Our neighbour, the river
We know instinctively, just as beekeepers with their bees,
我们本能地懂得，就像养蜂人和他的蜜蜂那样，
Lesson 56 Our neighbour, the river
that misfortune might overtake us if the important events of our lives were not related to it.
要是我们不把生活中的重大的事件告诉那条河，就可能大祸临头。
Lesson 56 Our neighbour, the river
We have special river birthday parties in the summer.
夏天，我们为这条河举办特殊的生日宴会。
Lesson 56 Our neighbour, the river
Sometimes were go upstream to a favourite backwater, sometimes we have our party at the boathouse,
有时，我们溯流而上来到我们喜爱的回水河汊举办；有时在船坞举办。
Lesson 56 Our neighbour, the river
which a predecessor of ours at the farm built in the meadow hard by the deepest pool for swimming and diving.
那船坞是农场一位前辈在一块草地上盖的，草地紧挨着一个专供游泳、跳水的深水池。
Lesson 56 Our neighbour, the river
In a heat wave we choose a midnight birthday party and that is the most exciting of all.
天气炎热时，我们便选择在半夜举办生日聚会，这种聚会是最令人激动的。