改制

I made the zip gun in class out of a toy airplane launcher.

我在上课时用玩飞机发射器成了这把枪。

We converted boxes into furniture.

我们把箱子成。

At the same time, we encouraged eligible large state-owned enterprises to get listed after the stockholding system was established.

时，鼓励符合条件的国有大型企业上市。