隔音 用英语怎么说？

soundproofing

「隔音」的英文名词是 soundproofing，指阻断声音传播的材料或工艺；形容词用 soundproof。

After a long flight, I specifically asked for a room with good soundproofing so I could sleep well before check-out.

长途飞行后，我特意要求一间隔音好的房间，以便在退房前睡个好觉。

The guesthouse offers breakfast included and free luggage storage, but the soundproofing is not great, so light sleepers may want earplugs.

这家民宿提供含早餐和免费行李寄存，但隔音不太好，所以睡眠浅的人可能需要耳塞。