The last bit of sunlight that is able to shine through the low-lying valleys creates a single flash of light on the side of the moon.

这是最后一道能够穿透低洼山谷照耀到我们的阳光，在月球的侧面形成一道闪光。

If the flow rate is just right, it piles up on the white dwarf and then undergoes fusion in a single colossal flash, erupting in a huge explosive flare.

如果流动速率合适，它会聚集在白矮星上，然后在一个巨大的闪光中发生聚变，以巨大的爆炸耀斑的形式爆发。