And the quantity of energy probably hit several thousand degrees on the surface for several hours, hot enough to melt steel.

其热量可能达到让表面温度几小时内都是几千度，足够融化钢铁。

Moist air can transport much greater quantities of energy than dry air.

潮湿的空气比干燥的空气能够携带更多的能量。

The only mechanism that people could think of that would produce such large quantities of energy seemed to be the gravitational collapse not just of a star but of a whole central region of a galaxy.

人们能想到的唯一会产生如此大量能量的机制似乎不仅是恒星的引力坍缩，而且是整个星系中心区域的引力坍缩。