名词
1. 球(体)；球形
A sphere is an object that is completely round in shape like a ball.
2. (活动、兴趣等的)范围，领域
A sphere of activity or interest is a particular area of activity or interest.
3. (社会地位或兴趣等相同的)人群，阶层，圈子
A sphere of people is a group of them who are similar in social status or who have the same interests.
4. (国家的)势力范围，影响所及的范围
A country's sphere of influence is an area of the world where it has a lot of influence.
1. any spherically shaped artifact
2. a particular aspect of life or activity
e.g. he was helpless in an important sector of his life
Synonym: sector
3. the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
Synonym: celestial sphereempyreanfirmamentheavensvault of heavenwelkin
4. the geographical area in which one nation is very influential
Synonym: sphere of influence
5. a three-dimensional closed surface such that every point on the surface is equidistant from the center
6. a solid figure bounded by a spherical surface (including the space it encloses)
7. a particular environment or walk of life
e.g. his social sphere is limited
it was a closed area of employment
he's out of my orbit