renew or amend air service agreements and arrangements previously in force;

续签或修改原有的民用航空运输协定和协议；

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Description of content: The agency is proposing to amend our air brake standard to improve the stopping distance performance of truck tractors.

国家公路交通安全管理署运输部拟修正空气制动器标准以加强拖拉机安全 距离之遵守。

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More than 200 students at a Beijing high school school signed a petition asking the city to "amend air quality regulations and take specific emergency measures, " according to Calum MacLeod from USA Today.

CNN: China needs smog-free air in a can

Budget carriers including Ryanair and Whizz Air have since agreed to amend their online booking policies to reflect this.

CNN: STORY HIGHLIGHTS