Europa is fascinating, mostly silicaterock with an ice crust.
欧罗巴是迷人的，主要是硅酸盐岩石和冰壳。
2
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。
3
The dry land of the continents consists mostly of granite and other light silicate minerals, while the ocean floors are made up mostly of a dark, dense volcanic rock called basalt.