渐弱

The sounds grew fainter.

声音。

The song of the oyster, though not silenced, was diminuendo con amore.

牡蛎之歌，虽然还未沉寂，已唱。

The mood changes abruptly after six or seven bars of wayward decrescendo.

六七个小节长时间之后，音乐情绪然改变了。