Europa is fascinating, mostly silicate rock with an ice crust.
欧罗巴是迷人的，主要是硅酸盐岩石和冰壳。
The rock of Roraima, however, is mostly silicate, which is also found on Mars.
而罗赖马洞穴的石头却主要是硅酸盐，火星上发现的也是硅酸盐。
The rock of Roraima, however, is mostly silicate, which is also found on Mars.
而罗赖马洞穴的石头却主要是硅酸盐，火星上发现的也是硅酸盐。
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