In reality, sea level varies according to the irregular interior of the planet.

事实上，海平面会根据地球不规则的内部而变化。

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We know more about outer space than we do about the interior of our planet.

我们对于外太空的了解比地球内部要多。

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The atmospheric phenomena suggested by jovian cloud tops are caused by convection the transfer of heat from the interior of the planet to its surface and beyond.

木星云顶景观显示了由热对流造成的大气现象：对流将热量从行星内部转移至表面或更远的地方。

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"The results suggest that water was incorporated during the formation of Mars and that the planet was able to store water in its interior during the planet's differentiation, " Hauri said.

MSN: Scientists say parts of Mars interior are as wet as Earth's

One last point: Airbnb has accumulated what they are calling one of the largest collections of interior photography on the planet, including about a million professional property shots.

FORBES: Move up http://i.forbesimg.com t Move down

To do this, they used computer models of the planet's interior and computed the possible combinations of elements and compounds that could yield the observed characteristics.

BBC: Oddballs: The strange worlds beyond our Solar System