Let the record speak for itself.

让记录本身来说话吧。

I let my web site speak for itself.

我的网站就是这么要求的。

We'll let the cover speak for itself.

就让封面代表一切吧。

I'll let the product speak for itself.

我会让产品自己来说话。

Your body language will speak for itself.

双鱼的身体语言已经说明了一切。