v.围裹；抑制；发低沉的声音
He did his utmost to muffle his feelings. 他竭力抑制自己的感情。
n.围巾；头巾；厚手套；消声器
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.
消声器
