hum note

例句：

1. 1. 嗡嗡声；哼唱声。2.
   音乐中的
2. 3.
   尤指在演奏乐器时
3. 1. The hum of the bees in the garden is soothing.
   花园里蜜蜂的嗡嗡声很舒缓。
4. 2. She hummed a tune to herself as she walked through the park.
   她在散步时哼唱着一首歌。
5. 3. The musician strummed his guitar for a few moments before starting to play.
   这位音乐家弹了一会儿吉他，然后开始演奏。