Retreat under fire is the most difficult and perilous of all military operations.
敌火下撤退是一切军事行动中最困难和危险的。
The fire took place only 15 months after the power station began commercial operations.
火灾在核电站开始商业运营仅仅15个月后爆发了。
The fire protection is ensure to safe operations in salt plants.
消防是盐厂生命财产安全的根本保证。
The fire protection is ensure to safe operations in salt plants.
消防是盐厂生命财产安全的根本保证。
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