melting solid

例句：

1. 1. The liquid is slowly turning intoa solid as it cools down.
   液体正在慢慢冷却，变成固体。
2. 2. The melting point of ice is -32degrees Celsius.
   冰的熔点是-32摄氏度。
3. 3. Thesolidified metal was thenmelted back into liquid form.
   然后金属被重新熔化成液态。