An eparchy was a civil administrative district in the Byzantine empire.
都区过去是拜占庭帝国行政区划的一级。
The regional air transportation refers to the air transportation within the radius of 600km or within the provincial or urban administrative district.
“支线航空运输”是指飞行距离600公里以下或在省、市（自治区）行政区划以内的运输飞行。
The regional air transportation refers to the air transportation within the radius of 600km or within the provincial or urban administrative district.
“支线航空运输”是指飞行距离600公里以下或在省、市（自治区）行政区划以内的运输飞行。
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