沙子被用于玻璃的生产中。

Sand is used in the ___production of glass.

公司的新型号将于明年初投入生产。

The company's new model will be going into ___production early next year.

由于录制音乐的大规模生产，比以前更多的人可以享受音乐。

More people can enjoy music than before, because of the mass ___production of recorded music.