" Why is that man making that terrible noise? " asked the Marquis impatiently.

“那个男人干嘛弄出那么可怕的声音？”侯爵不耐烦地问。

Now he's a strong, capable man making nonsense noises that sound a lot like instruments.

现在他是个强壮，有能力的男人，嘴里发出奇怪的声音，听起来像乐器似的。