Chapter 11

With regard to the shape of each star, the most reasonable view is that they are spherical¹. It has been shown that it is not in their nature to move themselves, and, since nature is no wanton or random² creator, clearly she will have given things which possess no movement a shape particularly unadapted to movement. Such a shape is the sphere, since it possesses no instrument of movement. Clearly then their mass will have the form of a sphere. Again, what holds of one holds of all, and the evidence of our eyes shows us that the moon is spherical. For how else should the moon as it waxes and wanes³ show for the most part a crescent-shaped or gibbous figure, and only at one moment a half-moon? And astronomical⁴ arguments give further confirmation⁵; for no other hypothesis accounts for the crescent shape of the sun’s eclipses. One, then, of the heavenly bodies being spherical, clearly the rest will be spherical also.

1 spherical   

adj.球形的；球面的

参考例句：

• The Earth is a nearly spherical planet.地球是一个近似球体的行星。
• Many engineers shy away from spherical projection methods.许多工程师对球面投影法有畏难情绪。

2 random   

adj.随机的；任意的；n.偶然的(或随便的)行动

参考例句：

• The list is arranged in a random order.名单排列不分先后。
• On random inspection the meat was found to be bad.经抽查，发现肉变质了。

3 wanes   

v.衰落( wane的第三人称单数 )；（月）亏；变小；变暗淡

参考例句：

• The moon waxes till it becomes full, and then wanes. 月亮渐盈，直到正圆，然后消亏。 来自《现代汉英综合大词典》
• The moon waxes and wanes every month. 月亮每个月都有圆缺。 来自《简明英汉词典》

4 astronomical   

adj.天文学的，（数字）极大的

参考例句：

• He was an expert on ancient Chinese astronomical literature.他是研究中国古代天文学文献的专家。
• Houses in the village are selling for astronomical prices.乡村的房价正在飙升。

5 confirmation   

n.证实，确认，批准

参考例句：

• We are waiting for confirmation of the news.我们正在等待证实那个消息。
• We need confirmation in writing before we can send your order out.给你们发送订购的货物之前，我们需要书面确认。