当我在自己的程序中，发现用到了模式，我觉得这就表明某个地方出错了。

When I see patterns in my programs, I consider it a sign of trouble.

youdao

通过前面板实现用户与程序的接口。

The user interacts with the program through the front panel.

youdao

通过前面板实现用户与程序的接口。

The user interacts with the program through the front panel.

youdao