请问Location Locus Locale的差异?

readok2009

请问一下
Location
Locale
Locus
三者有何不同?

我偷懒一下 金山词霸

location

n.（名词）
The act or process of locating.
定位：定位的行为或过程
A place where something is or could be located; a site.
地点：某物所在或可在的地方：地点

locale
n.（名词）
A place, especially with reference to a particular event:
现场：尤其是与某一特殊事件有关的地方：
the locale of a crime.
犯罪现场
The scene or setting, as of a novel.
场景：一部分小说的场面或布景


locus
n.（名词）
A locality; a place.
处所；地方
A center or focus of great activity or intense concentration:
核心：重要活动或注意力的中心或焦点：
“the cunning exploitation of loci of power; the insulation from normal American society”(Clifton Fadiman)
“对权力核心的巧妙利用；与正常的美国社会相隔绝”(克利夫顿·法迪曼)