即每收到一个订单所需要的广告花费为多少。

What is the cost per order for this advertisement method?

youdao

我希望你们留给我们一点利润空间以抵消广告花费。

I hope you will leave us some margin to cover the advertising expenses.

youdao

海伦：这样一来，我们的广告花费就会针对在，如我们所知，计算机使用者身上。

Helen: So that way, our advertising dollars would be focused on people we know are computer users.

youdao

But if it watches you over some amount of time just like it's been for years with advertisements, can this kind of algorithm, this kind of process presumably improve?

但是如果它像关注广告一样,花费一些时间关注你，这些算法和进程，想必会提升吧？

哈佛公开课 - 计算机科学课程节选