The refinery fire sent a plume of thick black smoke from blazing spherical storage tanks.(从燃烧的炼油厂球形储藏罐中冒出一股黑色的浓烟。)
We have rectangular coordinates, we have cylindrical coordinates and we have spherical coordinates.(我们有直角坐标系，有柱坐标系和球坐标系。)
Since the volume of the spherical universe is much bigger than its outer surface, how could this be true?(由于球状宇宙的容量远远大于其表面积，这一切怎么可能呢？)
The splot command is Cartesian by default but can also support spherical and cylindrical coordinates.(splot命令默认使用的是笛卡儿坐标系，不过也可以支持球面或柱面坐标系。)
And, now we have to learn about spherical coordinates, which you will see are a lot of fun.(今天我们来学习下球坐标，这是个很有意思的东西。)
Only galaxies with a spherical bulge-like component appear to accommodate supermassive black holes.(只有拥有球形膨胀组件的星系才可能容纳质量超大的黑洞。)
But, that spherical thing with a little slit going twisting into it will actually have boundary my loop.(这个有裂痕的球面，确实有一个边界是该回路。)
Nuclei with closed-shell have spherical symmetries.(闭壳核具有球对称性。)
But let's do it in spherical coordinates because that's the topic of today.(但我们用球坐标来做，因为这才是今天的主题。)
Leaves that have tons of tiny hairs, like a fern, can hold spherical water droplets in focus above a leaf's surface.(拥有大量微小绒毛的叶子，如蕨类植物，可以将球形水滴聚集在叶子表面。)
