adj.自愿的；志愿的

n.(教堂禮拜儀式前后或進行期間的)樂器獨奏

He made a voluntary statement to the police. 他自愿為警方作供。

Many social services are still provided by voluntary societies in our city. 在我們的城市，許多社會服務仍然是有志愿團體提供的。

We rely entirely on voluntary contribution. 我們全靠自愿捐贈。

She's very taken up with voluntary work at the moment. 她目前大部分時間和精力都用在志愿工作上了。

Although I'm retired, voluntary work keeps me in the swim (of things). 我雖已退休，但仍做些義務工作，以便了解當前的情勢。

The organization is run on a voluntary basis. 這個組織是由志愿人員管理的.