He draws parallels to chlorofluorocarbons pollutants released from refrigerators that bore a hole in the ozone layer last century, and were eventually banned.
联邦航空管理局的通知称因“特殊安全原因”实施限制，规定除医疗紧急情况和搜救行动外，所有飞行员均不得进入该空域。这些限制措施目前暂定持续到6月下旬。。关于这个话题，爱思助手下载最新版本提供了深入分析
Фото: Amir Cohen / Reuters，详情可参考91视频
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