1. About the same time, though, scientists realized comets might contain decaying radioactive isotopes that could have warmed cometary interiors to temperatures that caused the interiors to evolve. 然而，大约在同一时间，科学家们意识到彗星可能含有衰变的放射性同位素，这些同位素可能使彗星内部的温度升高到导致内部进化的温度。
2. We are analyzing Stardust cometary samples. 我们正在分析星尘号的彗星样品。
3. So the cometary dust work had to take priority. 也因此彗星尘埃的工作获得了优先。
4. NASA appears to know something about this red cometary orb. 美国宇航局似乎知道这个红色慧星天体的东西。
5. The cometary ejection play a crucial role in formation and evolution of the meteoroid stream. 彗星的喷发速度在流星群的演化过程中起着重要作用。
