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in the event of

如果……发生;万一

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01

如果……发生;万一

IN A SENTENCE

The FAA and NORAD had developed protocols for working together in the event of a hijacking.

发生劫机事件时,FAA和NORAD已制定了协同工作的应急规程。

来源:9/11 Commission Report : chapter 1段 oanc-ff7c251833189f61805af8ad:p115s1OANC-1.0.1 UTF-8 (datasets-2026-09-25); source file OANC/data/written_2/technical/911report/chapter-1.anc. OANC unrestricted-use terms: https://anc.org/data/oanc/