fountainn.喷泉;源泉;储水容器;泉水v.使像喷泉一样流
fountain theorem喷泉定理
fountain syringe自流注射器
fountain siringe自流注射器
fountain meaning基源意义
Fountain of Youth青春泉,长生不老泉(传说饮此泉者可恢复健康和返老还童,长生不老)
"she was a well of information"
"they tracked him back toward the head of the stream"