molten copper

例句：

1. 1. The molten metal was poured into a mold to shape it.
   熔化的金属被倒入模具中成型。
2. 2.The hot liquid began to boil over the stove.
   热液体开始从炉子上溢出。
3. 3. The pot of water was slowly heated until it reached a molten state.
   水壶里的水慢慢加热，直到它变成液态。