sphere

n.
1. orbit in which a star moves （星辰运行的）轨道。
△1H.IV.5.4.65: “Two stars keep not their motionin one sphere，”(“One star,one sphere” was the prin-ciple in ancient Ptolemaic astronomy.) 两颗星球不能同在一条轨道上运行。
△Rom.2.2.16: “do entreat hereyes / To twinkle in their spheres”. 请求她的眼睛代替它们在星座中闪耀。
△Ham.4.7.15: “That,as the starmoves not but in his sphere,I could not but by her.”正像星球的运行离不开轨道，我也简直离不开她了。
2. globe 星球。
△Mid.2.1.7: “Swifter than themoon's sphere.” 迅速赛过月球。

sphere球面

半圆以直径为轴旋转而形成的球表面。球面所围成的立体称为“球体”，简称“球”。半径为R的球，面积为4πR²，体积为4/3πR³。

sphere[sfiə]

n.球体，范围，领域，天体，行星
‖ sphere of action行动范围
sphere of application适用范围
sphere of circulation流通范围
sphere of consumption消费范围
sphere of influence影响范围，势力范围
sphere of interest利益范围
sphere of learning学术领域
sphere sphere of activity活动范围