Some of the most important duties involve maintenance, both preventative tasks carried out before things go wrong, and the corrective approach once something's actually broken.

最重要的职责之一涉及维护工作，这既包括问题之前进行的性工作，也包括实际发生故障采取的纠正方法。

Like nuclear reactors, precautionary systems prevent our factories, wellheads, and drilling rigs from bursting into flames; but those systems may fail, sparking industrial fires, releasing pillars of black smoke, and further polluting the atmosphere with greenhouse gases.

像核反应堆一样， 统可以止我们的工厂、井口和钻井平台起火；但这些统可能会发生故障， 引发工业火灾， 释放黑烟柱， 并进一步用温室气体污染大气。