美国联邦航空管理局以特殊情况和安全原因暂停全美航班
The Federal Aviation Administration grounded flights across the United States citing "extraordinary circumstances" and for "reasons of safety." https:...
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美国联邦航空管理局(FAA)以「extraordinary circumstances」和「reasons of safety」为由,暂停全美范围内的航班运行。