Thee squadron's former commander had been killed in action. Combat losses were mounting and pilots were being killed in noncombat crashes due to poor maintenance of planes.

此时，中队的前任队长在执行任务中牺牲。战斗造成的损失在不断攀升，而且由于糟糕的飞机维护情况，在非战斗状态中，还有飞行员坠机身亡。

youdao

Seiko wrote there was a similar fire in Kabukicho,Japan in two thousand one: "The building had a fire alarm apparatus but the switch was turned off because of poor maintenance.

VOA: special.2011.03.18

Gazprom denies it was at fault and blames the explosion on poor maintenance of the pipeline.

ECONOMIST: Turkmenistan's plight

"Often false alarms are caused by poor management or maintenance of alarm systems, " he said.

BBC: London Fire Brigade may recoup ?1.3m from false alarm calls

Concrete cancer, poor maintenance and the vandalism of social discontent have had their way - down it will come.

BBC: Viewpoint: Could people learn to love tower blocks?