源頭的英文是source。
source的復數形式是sources，第三人稱單數形式是sources，過去式形式是sourced，過去分詞形式是sourced，現在分詞形式是sourcing。相關短語有chronic source慢性汙染源，ablation source消融源，artesian source相關信源，可造句子如下：
1、他們的源頭隱藏在異國旅行中。
Their origins were shrouded in exotic travels.
2、在壹次單獨的觀察中，她發現手機成為家庭關系緊張的壹個源頭。
During a separate observation, she saw that phones became a source of tension in the family.
3、即使在童年時期，缺乏關於我自己的信息也是我不快樂的壹個源頭。
A lack of information concerning my own was a source of unhappiness to me even during childhood.
4、但是輻射作為壹個通用術語，實際是指所有從其源頭擴散開來的東西。
But radiation as a general term actually refers to anything that spreads away from its source.