humming

The humming from the kitchen told me she was happy.

用法提示：名词，表示哼唱的动作或声音。

I could hear the soft humming of a lullaby in the next room.

用法提示：名词，指哼唱的声音。

His constant humming during work annoyed his colleagues.

用法提示：名词，表示哼唱的行为。