首先尝试设计一个关键的细节，然后接下来的设计部分可能随之而来。

Try designing a key detail first, and maybe the rest of the design will flow from it.

youdao

因此，适当的设计 command facade 实现的关键首先是设计 command，并从那里定义恰当的 facade 接口。

Therefore, the key to properly designing a command facade implementation is to first design the commands and, from there, define an appropriate facade interface.

youdao

这样，在使用canvas设计关键元素的场合，设计者就会觉得非常恼火。

This will make using the canvas for crucial design elements somewhat annoying.

youdao