Definition: the sound of something being said quietly Level: C2
从隔壁房间能听到柔和的低语声。
A soft ___murmur of conversation could be heard from the adjacent room.
她低声回应，以免打扰他人。
She responded with a gentle ___murmur to avoid disturbing others.
溪水持续的低语声提供了舒缓的背景噪音。
The constant ___murmur of the stream provided a soothing background noise.
