A civil aircraft performing instrument flight shall observe instrument flight rules.
进行仪表飞行的民用航空器，应当遵守仪表飞行规则。
People living near the airport are pushing for new rules about night flight.
住在机场附近的人们正强烈要求制订出夜航班机的新规。
People living near the airport are pushing for new rules about night flight.
住在机场附近的人们正强烈要求制订出夜航班机的新规。
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