... Relation of Teaching and Learnin9教与学的关系 Safety Threat Facing Airlines航空安全的威胁 Global Public Relation全球公共关系 ...
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这个事件让人们关注到了，日益增长而又真实存在的航空安全威胁。
the incident brought attention to a real and growing threat to air safety.
然而，我国机场管理的问题和薄弱环节客观存在，对航空安全产生了潜在的威胁。
However, there exist a lot of problems and weak links in safety management of China's civil aviation airports, so the civil aviation safety is threatened.
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