In imminent peril; on the verge of collapse; hanging by a thread.
这栋老旧的建筑年久失修，已经危在旦夕，随时可能坍塌。
This old building has been neglected for years and is now in imminent danger of collapse at any moment.
Era:
Ancient
Frequency:
Antonym:
Story:
Towards the end of the Eastern Han Dynasty, Zhang Jiao's peasant rebel army besieged Duchang, where Kong Rong's troops were stationed. Kong Rong dispatched Taishi Ci to invite Liu Bei, the Chancellor of Pingyuan, to send reinforcements.
Upon arriving in Pingyuan, Taishi Ci told Liu Bei that Kong Rong was in imminent peril and desperately hoped for military assistance to lift the siege.
Liu Bei immediately sent 3,000 elite soldiers with Taishi Ci.
Seeing the reinforcements arrive, the rebel army promptly lifted the siege on Duchang.
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