、Of all the planets in our own solar system,we are now pretty certain the Earth is the only

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• 、Of all the planets in our own solar system,we are now pretty certain the Earth is the onlyOf alltheplanetsinourown solar system,we arenowprettycertaintheEarthisthe onlyoneonwhichlifecansurvive.这句话里面的ON 怎么单独放在那里 放在WHICH前面啊 我该怎么理解这个ON啊?这位置我搞不懂怎么翻译
• 帮我翻译一下英语谢谢啦啊啊啊啊we must conclude from the work of those who have studied the origin of life,that given a planet only approximately like our own,life is almost certain to start.Of all the planets in our own solar system,we are now pretty certain the Earth is the only one on which life can survive.Mars is too dry and poor in oxygen.Veneus far too hot,and so is Mercury,and outer planets have temperatures near absolute zero and hydrogen-dominated atmosphe
• 、Of all the planets in our own solar system,we are now pretty certain the Earth is the only
• 英语翻译Since early times,people have been fascinated with the idea of life existing somewhere else besides earth.Until recently,scientists believe that life on other planets was just a hopeful dream.But now they are beginning to locate places where life could form.In 1997,they saw evidence of planets near other stars like the sun.But scientists now think that life could be even nearer in our own solar system.One place scientists are studying very closely
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