乐队主唱即兴演唱时，欢乐地哼着'嘘啵'的旋律。

The lead singer happily hummed '___sh-bop' during the improvised melody.

小女孩一边跳舞一边哼着'嘘-啵 嘘-啵'的旋律。

The little girl hummed '___sh-bop ___sh-bop' while dancing around.