BBC NewsThousands of US flights cancelled or delayed two days after grounding of planes nationwide
作者 Sakshi Venkatraman全文約 3,148 字
文章摘要
BBC News · 文章頁摘要The US transport secretary says that normal air-traffic operations may not be restored until Monday.
Thousands of US flights were cancelled or delayed on Sunday as the US air-traffic control system continued to recover from a technical failure that le...