锻

例句：

1. 1. He has been training for the marathon every morning for a year.
   他每天早上都训练，已经一年了。
2. 2. The steel is so strong that it can be used to make weapons.
   这种钢非常坚固，可以用来制造武器。
3. 3. The sculptor worked on this piece of sculpture for several weeks.
   这位雕塑家花了几周时间来雕刻这件作品。