This refers to the belief of various theorists who propagate that the earth is a hollow sphere and has an internal su ce area.
这指的是谁宣扬地球是一个中空的球体，并有一个内部表面积各种理论家的信念。
Hollow sphere plastic pigment H-B is more fit for formulation of LWC than hollow sphere plastic pigment H-A.
空心球塑料颜料h—B比空心球塑料颜料h—a更适合用于轻量涂布纸涂料配方中。
If you've ever taken a sphere and deleted some faces, you've noticed the sphere is in fact hollow.
如果您删除一些领域迈出了有史以来脸上，你看到的其实是空心球。
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