As you see above, at first, we declared a Command object then instantiated it.

如同你看到的，首先，我们声明一个Command对象，接着初始化它。

youdao

As you see above, at first, we declared a Command object then instantiated it.

如同你看到的，首先，我们声明一个Command对象，接着初始化它。

youdao