muffling

例句：

1. 2.
   声音
2. 1. The sound of the rain was muffled by the thick fog.
   雨声被浓雾所遮蔽，变得模糊不清。
3. 2. The old man muffled his cough with a handkerchief.
   老人用手帕捂住咳嗽，使其变得模糊。
4. 3. The muffled voices could be heard from the other room.
   从另一个房间可以听到模糊的低语声。