a round shape in space; ball-shaped mass; solid figure all points of which are equally distant from a center
Noun:
a particular environment or walk of life;his social sphere is limited
it was a closed area of employment
he's out of my orbit
any spherically shaped artifactthe geographical area in which one nation is very influentiala particular aspect of life or activity;he was helpless in an important sector of his life
a solid figure bounded by a spherical surface including the space it enclosesa three-dimensional closed surface such that every point on the surface is equidistant from the centerthe apparent surface of the imaginary sphere on which celestial bodies appear to be projectedsphere，domain，field，territory，province这些名词均含“范围，领域”之意。
sphere指有明显分界线的范围或领域，强调彼此不会干扰、跨越，各不相关。
domain指知识艺术、兴趣或人类活动的领域。
field主要指经选定在一段时间内作专题研究的方面或领域，含夸张意味。
territory指科学知识、活动等的领域或范围。
province即可指科学、艺术、学问的领域或范围，又可指个人或机关职权的管辖范围。
15世纪中期进入英语，直接源自中古英语的spere，意为空间；最初源自拉丁语的sphaera，意为球体。
用作名词 n.
动词+～enlarge〔increase〕 one's sphere扩大…范围形容词+～perfect sphere完全的球体wide sphere范围很广介词+～in〔within〕 one's sphere of在…范围内～+介词the sphere of broadcasting广播界the sphere of influence影响范围
近义词 ballglobe
用作名词n.The Earth is not a perfect sphere.地球并不是一个完全的球体。
Biology is not my sphere.生物学不是我研究的范围。
动词87%,名词13%
The scientist is distinguished in manyspheresof knowledge.这位科学家在许多知识领域中都是杰出的。
The earth is an oblate sphere.地球是一扁圆球体。
The earth, sun and moon arespheres.地球、太阳和月亮都是天体。