木星的光照程度只有地球的三十分之一，土星为八十分之一，天王星甚至达到三百分之一，而离太阳最远的那些星体，如1845年发现的海王星，光照程度只有地球的九百分之一。
On Saturn, eighty times. On Uranus, even three hundred times; and upon the last of the planets, Neptune, discovered in 1845, light is nine hundred times more feeble than upon our globe.
仔细想一想，离期末考试只有三十多天了，而离月考只有四天了。
Think about it, only more than thirty days from the final exam, while only four days away from the monthly exam.
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