1. We can perhaps forgive those who said the moons of Jupiter were produced by Galileo´s spyglass if we recall that in his day, as for centuries before, curved glass was the popular contrivance for producing not truth but illusion, untruth;
    如果我们回想一下伽利略之前几个世纪期间，曲面镜一直是一种用于产生幻影而不是产生真象的把戏装置，那么我们就会原谅那些当时把伽利略观察到的木星卫生说成是伽利略用他的小望远镜变出来的人们，

2. A telescope would have to be as far away as the planet Jupiter to look for life in outer space,
    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。

3. Jupiter is one of the sun´s planets.
    木星是太阳的一个行星。

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