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sphere

UK/sfiә/US
IELTSTOEFLB1

Definitions

n.

A perfectly round three-dimensional object, like a ball

球体,球形物(完美的三维圆形物,如球)

n.

A field or domain of activity, knowledge, or influence

领域,范围(活动、知识或影响的领域)

Root Breakdown

Root-derived
sphereball, globe, round body
=sphere

From Greek sphaîra, 'ball.' The literal meaning is a perfectly round body. Because a ball is a self-contained round region, sphere also came to mean an abstract region — a sphere of influence, the public sphere — the zone within which someone acts or holds power.

Root sphere still carries 11 more words

Why It Means This

The leap from 'ball' to 'domain' is the interesting part. Imagine an invisible globe drawn around a person, a country, or a topic, marking off everything inside as theirs. That bounded round region is what we mean by a sphere of influence or a person's private sphere — a metaphorical ball drawn around an area of life.

Common Collocations

  • 1.sphere of influence势力范围/影响圈
  • 2.public sphere公共领域
  • 3.private sphere私人领域
  • 4.sphere of activity活动领域

Example Sentences

  • 1.

    The Earth is not a perfect sphere; it bulges slightly at the equator.

  • 2.

    Cooking and cleaning were once seen as the woman's sphere.

  • 3.

    Russia long regarded the region as part of its sphere of influence.

  • 4.

    She is a respected figure in the political sphere.

Synonym Comparison

- sphere — a domain or zone of activity/influence; also the geometric ball

- field — a broad area of study or work: the field of medicine

- domain — an area one owns or governs; also technical (a website domain)

- realm — a kingdom or grand abstract territory: the realm of imagination

- orbit — the zone of someone's influence, with a sense of pull: drawn into his orbit

Word Forms

Noun

Pluralspheres

Derivatives

sphericalatmospherehemisphere
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