Question

高手帮忙翻译成英语!!!

张衡是东汉中期浑天说的代表人物之一；他指出月球本身并不发光，月光其实是日光的反射；他还正确地解释了月食的成因，并且认识到宇宙的无限性和行星运动的快慢与距离地球远近的关系。

张衡观测记录了两千五百颗恒星，创制了世界上第一架能比较准确地表演天象的漏水转浑天仪

Answer 1

Zhang Heng is one of the key figures of the unsophisticated-sky theory in East-Han Dynasty; He had pointed out that moon itself doesn't shine,the moon light is actually the reflection(of the sun);he had also explained the cause of formation of the ecliptical,and he had also been aware of the infinity of the universe and the relationship between the speed of the planets' movement and the distant to the Earth.
Zhang Heng had (discover and) recorded 2500 stars,and had creatd the world first unsophisticated-sky machine which can perform the astronomical phenomena accurately.
对于“浑天说”我翻得不一定对，就写“Hun Tian”theory也行