So, this is a positive sphere of custard, and inside are little, negative bits.

这是一个带正电荷球状的乳蛋糕，里面有一些小的负电荷的小块。

麻省理工公开课 - 固态化学导论课程节选

And this dimple is later forming a vesicle, a round ball, that goes on and forms the ear.

随后形成一个圆球状的泡囊，直至发育成耳朵。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

It's no longer just a round spherical mass of cells, but it has some structure.

不再只是一个球状的细胞团,它有了一定的结构

耶鲁公开课 - 生物医学工程探索课程节选

It turned out to be a spotty globe just like the earth.

最后发现是像地球一般的球状物。

耶鲁公开课 - 弥尔顿课程节选

And yet, we know that the shape of the s orbital is spherical.

并且，我们知道S轨道是球状的。

麻省理工公开课 - 固态化学导论课程节选