科普小知识：水星上为什么没有水？
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ID: 4365
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Mercury在中文翻作「水星」，所以很多人小时候一定问过这个问题：「水星上究竟有没有水呢？」你知道答案吗？今天让我们一起来看看宇宙间的科普小知识吧！
Joshua,Lyn
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| SIMPLIFIED | PINYIN | ENGLISH | |
|---|---|---|---|
| 太阳系 | tàiyángxì | the solar system | |
| 邻近 | línjìn | neighboring; adjacent; near | |
| 大气层 | dàqìcéng | atmosphere | |
| 稀薄 | xībó | thin |
在太阳系中，水星跟太阳的距离很近，受到太阳高温的影响，水星白天的地表温度非常高，可以达到摄氏427度，因此水星没办法像邻近的金星和地球一样形成一层厚厚的大气层。
zài tàiyángxì zhōng，Shuǐxīng gēn tàiyang de jùlí hěn jìn，shòudào tàiyang gāowēn de yǐngxiǎng，Shuǐxīng báitiān de dìbiǎo wēndù fēicháng gāo，kěyǐ dádào Shèshì sìbǎièrshíqī dù，yīncǐ Shuǐxīng méi bànfǎ xiàng línjìn de Jīnxīng hé dìqiú yīyàng xíngchéng yīcéng hòu hòu de dàqìcéng。
In the solar system, Mercury is very close to the sun. Because of the high temperature from the sun, the ground temperature on Mercury is very high, which is up to 427 degree celsius. Therefore, Mercury cannot form a thick layer of atmosphere like Venus and Earth.
水星的大气层究竟有多稀薄呢？它只有地球大气层密度的百分之十二。
Shuǐxīng de dàqìcéng jiūjìng yǒu duō xībó ne？tā zhǐ yǒu dìqiú dàqìcéng mìdù de bǎifēnzhī shíèr。
How thin the layer of atmosphere is on Mercury? It is 12% of the atmosphere density on Earth.
因为大气层稀薄，所以反射太阳光的能力不如地球，进而也促进了水星高温地表的形成。
yīnwèi dàqìcéng xībó，suǒyǐ fǎnshè tàiyángguāng de nénglì bùrú dìqiú，jìnér yě cùjìn le Shuǐxīng gāowēn dìbiǎo de xíngchéng。
On account of the thin layer of atmosphere, it cannot reflect sunlight as much as the Earth does, and furthermore lead to the formation of Mercury's high temperature surface.
大部分的太阳光来到水星以后都被表面的岩石所吸收，只有百分之八被反射出去。
dàbùfen de tàiyángguāng láidào Shuǐxīng yǐhòu dōu bèi biǎomiàn de yánshí suǒ xīshōu，zhǐ yǒu bǎifēnzhī bā bèi fǎnshè chūqù。
Most of the sunlight are absorbed by rocks on the surface, and only 8% of them reflected.
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