甚至不少程序员对他们是做什么的都没有清晰的概念。

Even many programmers don't have clear idea what they do.

youdao

你可以用概念卖什么的最有效方法，网络营销。

You could sell any concept using the most effective method, Network marketing.

youdao

你可以用概念卖什么的最有效方法，网络营销。

You could sell any concept using the most effective method, Network marketing.

youdao