Read Edit View history 飞行安全 fēixíng'ānquán aviation safety Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 飞行安全/ 飛行安全 fēixíng'ānquán aviation safety the safety of aircraft flight and operation Edit Delete References Add reference same_as 飞安/飛安 → 飞行安全/飛行安全 Edit Delete