Trying to cool the reactors
尝试冷却反应堆

Cores in units 1, 2 and 3 heated up to the extent that the zirconium covering the fuel reacted with steam, releasing hydrogen gas. Hydrogen collected in the secondary containment buildings, where it exploded, blowing the tops off units 1 and 3, and damaging the cooling system of unit 2.
1、2、3号反应堆核心的温度升高到了一定程度，使得覆盖在燃料棒上的锆元素与水蒸气产生了反应，释放出了氢气。氢气在第二层安全壳内聚集，最终爆炸，将1号和3号的顶盖炸飞，损毁了2号的冷却系统。

Primary containment vessels in units 1 and 3 are reportedly intact, but a structure in unit 2 has cracked, preventing water from fully covering the core.
报道中称1号和3号的反应堆外壳是完好的，但是2号反应堆中的某个构架被炸坏了，致使水无法完全淹没核心。

Attempting to cool the cores, engineers are flooding cores and their containment vessels with seawater and boric acid, which acts to dampen fission reactions.
为了冷却核心，工程师们灌入掺了硼酸的海水，让核心及安全壳浸没在其内，以起到抑制裂变反应的作用。