preventive action短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 计预防性措施 Because such a disaster was unlikely to occur, the benefits of taking action beforehand could not be assessed unless the preventive action took the form of a dramatic last-minute save. 因为这样的灾难不大可能发生，所以未雨绸缪的好处很难估计，除非它是在千钧一发之际戏剧性地挽回了局面。 yeeyan