名词 wellhead:

1. the source of water for a well

2. a structure built over a well

Wellinn.韦兰(在比利时；东经 5º07' 北纬 50º05')welladv.很好地；相当地int.好吧；啊adj.健康的；良好的；适宜的n.井；源泉；楼梯井v.涌出well-appointed kitchen装备良好的厨房well-formed constraint合格性制约Well do I remember it.那个我可记得清清楚楚。Well is not easy work.学好英语是件不易的事。well-founded structure良基结构well-founded induction根据非常可靠的归纳法well-defined operation完全确定的操作well--known scholars名士wellbore multiphase flow井筒多相流well-oiled disposition讨人喜欢的性格

1. Land the BOP onto the well head.
   座防喷器到井口头。
2. To a frog in a well heaven is only a sieve in size.
   井蛙观太空，天仅井口大。
3. People fetching water chat with each other by the rails of the well.
   打水的人在井栏旁闲聊起来。