Second, Jupiter's enormous mass prevents most Sun-bound comets from penetrating the innersolarsystem.
其次,木星的巨大质量阻止了大多数与太阳结合的彗星穿透太阳系内部。
2
Paradoxically, while the temperatures required for liquid water exist only in the innersolarsystem, the key building blocks of life, including water itself, occur primarily beyond the asteroid belt.