portal 的理解和讲义以及例子！！！谢谢大家！

portal
[5pC:tEl]
n.
入口

Portal
[5pC:tEl]
入口

portal
por.tal
AHD:[pôr“tl, p½r“-]
D.J.[6p%8rtl, 6pour-]
K.K.[6p%rtl, 6por-]
n.（名词）
A doorway, an entrance, or a gate, especially one that is large and imposing.
正门，大门：入口、大门，尤指大而宏伟的
An entrance or a means of entrance:
入口或进入的手段：
the local library, a portal of knowledge.
地区图书馆，知识之门
The portal vein.
门静脉
adj.（形容词）
Of or relating to the portal vein or the portal system.
门静脉：门静脉的，门静脉系统的，与门静脉系统有关的
Of or relating to a point of entrance to an organ, especially the transverse fissure of the liver, through which the blood vessels enter.
肝门的：一器官入口处的，尤指肝脏的横肌裂沟，血管从此裂沟进入肝脏

Middle English
中古英语
from Old French
源自 古法语
from Medieval Latin port³e [city gate] [from neuter of] port³lis [of a gate]
源自 中世纪拉丁语 port³e [城门] [] 源自port³lis的中性词 [大门的]
from