例句與造句

1. Our solar system consists of an average star we call the sun , the planets mercury , venus , earth , mars , jupiter , saturn , uranus , neptune , and pluto and , the satellites of the planets ; numerous comets asteroids , and meteoroids ; and the interplanetary medium
   我們太陽(yáng)系由普通恒星? ?太陽(yáng)、九大行星（水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星）和各大行星的衛(wèi)星、數(shù)量眾多的彗星、小行星、流星以及行星間的介質(zhì)組成。
2. It's difficult to find interplanetary medium in a sentence. 用interplanetary medium造句挺難的