n.
a particular environment or walk of life
"his social sphere is limited"
同义词：domainareaorbitfieldarena
any spherically shaped artifact
the geographical area in which one nation is very influential
同义词：sphere of influence
a particular aspect of life or activity
同义词：sector
a solid figure bounded by a spherical surface (including the space it encloses)
a three-dimensional closed surface such that every point on the surface is equidistant from the center
the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
同义词：celestial sphereempyreanfirmamentheavensvault of heavenwelkin
Spheres of Justice
Spheres of Justice: A Defense of Pluralism and Equality
Polymer adsorption on small spheres. A scaling approach
The Internet, Public Spheres, and Political Communication: Dispersion and Deliberation
Preparation of photonic crystals made of air spheres in titania
Mesoporous titania spheres with tunable chamber stucture and enhanced photocatalytic activity
Controlled growth of monodisperse silica spheres in the micron size range ☆
Fabrication of Uniform Magnetic Nanocomposite Spheres with a Magnetic Core/Mesoporous Silica Shell Structure
Experiments on the Gravity-Free Dispersion of Large Solid Spheres in a Newtonian Fluid under Shear (1954)
The Forces experienced by Randomly Distributed Parallel Circular Cylinders or Spheres in a Viscous Flow at Small Reynolds Numbers
