例句 /

B.The surge of nuclear fusion would expand the gas in the core, cooling the core back down and quickly returning the nuclear fusion rate to normal.

B.The surge of nuclear fusion would expand the gas in the core, cooling the core back down and quickly returning the nuclear fusion rate to normal.

太阳会变成一个更大、更热、更明亮的主序星并且会保持这种状态直到核心的氢燃料用尽为止。