Roughly speaking , we receive about fifty letters a week on the subject.

关于这个问题，粗略地说，我们每周能收到大约五十封来信。

Roughly speaking: objects are colourless.

一般来说，对象是没有颜色的。

So roughly speaking, that's where we're going.

大致地讲，这就是我们的课程安排。

Well, roughly speaking, a hacker is a computer buff.

额，简单来说，黑客就是电脑的老板。

Roughly speaking, there are four steps to every decision.

大致说来，做出一个决定要经历四个步骤。