Iran's civil fleet is made up of planes in poor condition due to their old age and lack of maintenance.

伊朗的民用航空大都是由一些质量较次，年久失修的飞机组成。

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The project underscores how China is trying to take a lead in developing cutting-edge nuclear technologies at a time it is planning a massive buildup in its fleet of civil nuclear reactors.

该项目显示出，中国在计划大规模建造民用核反应堆之际，正努力在开发尖端核技术方面领先。

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The prospect of increasing the drone fleet is prompting some unease among civil libertarians because the border agency allows local law enforcement and federal agencies to use the aircraft for special missions over U.S. territory.

WSJ: Border-Security Drone Program Off to Rough Start

AirAsia, Southeast Asia's largest carrier by fleet size, and its local partners will now have to seek approvals from the civil aviation ministry and other authorities to start the airline, Mr. Mayaram said.

WSJ: India Approves AirAsia's Airline Proposal