And we're spreading about 30,000 tons of silicate rock every month now.

而我们现在每个月都要播撒大约3万吨的硅酸盐岩。

Now get this: a lot of Europa's material is silicate rock, like on Earth and other terrestrial planets, located in a layer under the ocean.

和地球及其他类地行星一样，木卫二的海洋底下的主要成分是硅酸盐矿石。

Our Earth has a core made of mostly iron and nickel, then its mantle, which is comprised of mainly silicate rock with elements like magnesium, aluminium, oxygen and more.

我们的地球有一个主要由铁和镍制成的地核， 然后是它的地幔，地幔主要由硅酸盐岩石和镁、铝、氧等元素组成。