cast manganese steel frog

例句：

1. 1. The potter casts the clay into a mold.
   陶工将泥土放入模具中。
2. 2. The sculptor casts his sculpture in bronze.
   雕塑家用青铜铸造他的雕塑。
3. 3. The carpenter cast the wooden planks for the house.
   木匠为房子制作木梁。