high-melting point

例句：

1. 1. The material has a high-melting point, making it difficult to melt.
   这种材料有高熔点，很难熔化。
2. 2.The metal has a high-melting point, which is why it's so useful in construction.
   这种金属有高熔点，这就是为什么它在建筑中如此有用的原因。
3. 3. The temperature of the liquid must be above its high-melting point for it to boil.
   液体的温度必须高于其高熔点才能沸腾。