spheres
n.
球（体）( sphere的名词复数 );
（兴趣或活动的）范围;
（包围地球等的大气的）层;
圆球;
例句:
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These concrete spheres are made from manufactured concrete block.
来自SA
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Concentric spheres are parallel.
同心球面是平行的.
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The earth, sun, and moon are spheres.
地球, 太阳和月亮都是天体.
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We move in different spheres.
我们在不同的领域里活动.
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Our heart is high instarr'd in brighter spheres.
来自J. Ford
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Thy...eyes, like stars, start from their spheres.
来自Hamlet,Shakespeare