如果你的设计看起来黑色和寂静又阴沉，并在页头一个夕阳西下的城市天际线。这样很不好，甚至没有正确的暗示一下这个网站是干什么的。

If your design is all dark and brooding and has a city skyline at sunset in the header, it's not going to give us even the slightest hint about what the site's purpose is.

youdao

在你开始设计自己的应用程序之前，必不可少的是精确定义你的应用程序是做什么的。

Before you begin designing your application, it "s essential to define precisely what your application does."

youdao