泉源的英文：
springhead
wellhead
wellspring

"The pure stream running past my yard, The caves and valleys at my door."
泉源在庭户,洞壑当门前。

a society that was the springhead of Western legal thought.
作为西方法律思想起源的一个学派

Securely connect the hydraulic connector to the wellhead.
确保液压连接器连接到井口上。

It was not for her to see the wellspring of human passion.
她当然不懂得人类强烈情感的来源。

This is Cairo --a cradle of civilization, a wellspring of culture, and a meeting-place of the Asian, African, and European World
这就是开罗，文明的摇篮，文化的源泉，亚洲，非洲以及欧洲的交融之地。