There is a kind of rough wall surface, which is said to be sound-absorbing.

有一种墙面是麻的，据说可以吸音。

《新英汉大辞典》

You sound like Jacob, but yet your arms are rough like Esau's.

你说起话来像是雅各布，可是你的手臂却像以扫的手臂一样粗壮。

youdao

The performance for rough thousand coughs, the sound mouth mute, even loses one's voice.

表现为粗糙的千咳，声音嘴哑、甚至失声。

youdao

If we could put that hard sound with this rough attitude, we're bound to get some attention.

NPR: RUN DMC Crashes Rock's Hall Of Fame, Again

It's an impressive showcase for his slow and rusty howl, which always did sound like a rough approximation of bluesman Charley Patton.

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It should sound familiar: it's a rough (if possibly unintentional) Windows doppelganger to FiftyThree's Paper for iPad, which itself was designed by some of the former Courier team.

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