聲音本身：又粗又刺耳
這是最貼著核心畫面的用法：直接形容耳朵聽到的東西。
adjective · C1
Sounding loud, rough and harsh, in a way that is unpleasant or too much for the people who have to hear it.
刺耳的；粗嘎吵鬧的
核心畫面
Think of a sound with a in it — a crow, a laugh that barks, a cheer shouted until the voice tears. Loud is only half of it; the other half is rough, as if the sound had an edge that catches on your ear. Both uses of the word sit on that one sound. First the sound itself, then the people who are making it.
可以想成一種「帶著刮痕」的聲音：烏鴉的叫、笑到像在吼、喊到嗓子都啞掉的歡呼。大聲只是其中一半，另一半是粗糙——聲音像…更多收起
可以想成一種「帶著刮痕」的聲音：烏鴉的叫、笑到像在吼、喊到嗓子都啞掉的歡呼。大聲只是其中一半，另一半是粗糙——聲音像有個邊角，會刮到耳朵。這個字的兩個用法都站在同一個聲音上：先是那個聲音本身，接著是發出這種聲音的那群人。From the word’s history
Borrowed from Latin raucus, meaning hoarse or husky. The hoarse throat is where the roughness in the modern word comes from.
這個字借自拉丁文 raucus，意思是「沙啞的、嗓子啞掉的」。今天 raucous 裡那層粗糙感，就是從「沙啞的喉嚨」這個畫面來的。
Wiktionary entry for 'raucous' (kaikki:3f6f69a190036ae4:881863865): "Borrowed from Latin raucus (hoarse, husky, raucous)."
Two branches
發出這種聲音的人
同一個聲音，鏡頭往後拉一點，拍到的不是聲音而是製造聲音的人。所以這個用法幾乎都接「一群人」：crowd、party、group、atmosphere。
adjective · C1
Behaving in a loud, wild way that takes no notice of other people, and sometimes turning rough; used about people, crowds, parties, and the atmosphere they make.
喧鬧撒野的；鬧哄哄的