adj.(指声音)听不清的；低沉的
动词muffle的过去式和过去分词形式.
Her voice sounded muffled up. 她的声音听起来像是很压抑。
The noises of the street were muffled considerably. 街上的噪音减轻了许多。
There was a muffled explosion somewhere on their right. 在他们的右面什么地方有一声沉闷的爆炸声。
The muffled tones of the broken bell summoned them to meet. 那口破钟响起的低沉声音召唤他们去开会。
