1、The so-called "food" is a celestial body that was another celestial body or its Heiying Yanzhe all or part of the astronomical scene.(所謂"食"就是指一個天體被另一個天體或其黑影全部或部分掩遮的天文景象。)
2、But sunlight is not the only way to heat anastronomical body. Gravity can do it, too.(但太陽光并非讓一個天體熱起來的唯一途徑，引力也可以。) 【hao86.com好工具】
