冬天如果关闭超高温机械设备，管道就会冻住，造成昂贵的损失，工程师设置了一个复杂的循环程序让机器维持运转。
Unable to shut down superhot machinery in winter — the pipes could have frozen, causing costly damage — the plant's engineers kept the facility operating through a complicated recycling scheme.
反应堆瞬变，主管道的破裂，蒸汽线的断裂，流动的损失，等等。
Reactor transients, rupture of the primary piping, steam line breaks, loss of flows and so forth.
美国全国每天因管道渗漏而损失的饮用水多达70亿加仑——而全国需要不断监测和维修的管道网络长达80万英里。
Across the country, we lose an average of seven billion gallons of drinking water a day to leaks-and we have an 800, 000-mile network of pipes that needs constant monitoring and repair.
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