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(gè)天體被另一個(gè)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(yáng)光并非讓一個(gè)天體熱起來(lái)的唯一途徑，引力也可以。)
