Water in one of the pools was evaporating because of the rods' heat, and temperatures were slowly rising in two other pools because coolant pumps were knocked out by the March 11 tsunami, experts say.

其中一个池子的水因为燃料棒的高温在逐渐蒸发，其余两个水池的温度也在逐渐上升，这是因为冷却泵已经被3月11日的海啸摧毁了，专家这样解释。

youdao

At low temperatures, the outlet to the radiator is completely blocked-all of the coolant is recirculated back through the engine.

在低温时，散热器的出口完全被堵住-所有的冷却液在发动机内来回流动。

youdao

Electricity is needed to keep the reactor cores covered with coolant and to keep safe temperatures in spent fuel pools.

WSJ: Virginia Nuclear Power Plant Loses Power After Quake