n (1)(水)井(place from which underground water comes)[C]：look for a～in the desert 在沙漠中找井; dig/drill/drive/sink a～挖/钻/掘/凿井; pump/get water from a～从井中抽/取水; a natural～天然井; an oil～油井;～water 井水;〖同〗spring，fountain;

(2)井形空间(enclosed space similar to a well)[C]：Smoke comes up the～of the stair. 烟从楼梯井处冒出来。He fell down the stair-～and broke his neck. 他跌下楼梯井，摔坏了脖子。

(3)来源(source)[C][N(of)](fml)： a～of information/knowledge 信息/知识的源泉;〖同〗source;

→′well-head，′well-spring n 泉源;

vi(流，涌)喷出(flow)[I+prep，I+adv(out/up)]：Water～s from a spring beneath the rock. 水从岩石下的泉中涌出。Blood was～ing (out) from the wound/the cut. 鲜血从伤口/刀口中流出。Water～ed out from the broken pipe. 水从破裂的水管喷出。Oil suddenly～ed (up) out of the ground. 石油突然从地下喷出来。Tears～ed up in her eyes. 她泪水盈眶。Anger～ed up in her. 她怒火中烧。Pity/Strong feelings/Gratitude～ed up in his heart. 怜悯/强烈的感情/感激之情涌上他的心头。〖同〗pour，stream，surge，spout;

well over (v adv/prep) 泛滥(vt & vi)：Too much milk was poured in the glass，and it～ed over (the lip). 杯子里倒的牛奶太多，都溢出来了。