Soft pitch is a black solid at a certain temperature , it will be solidified into a brittlesolid with shell-like fracture.
常温下为黑色固体,在一定的温度下凝固成很脆的具有贝壳状断口的固体,呈玻璃相;
2
But a new look at Titan's insides reveals even more oddities: Beneath the brittle crust of ice lies a layer of slush. Deeper still is an underground ocean over a solid core of rock and ice.