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| English | Chinese |
| aircraft engine emission The formation and discharge of gaseous and particulate pollutants into the environment, especially the stratosphere, chiefly from airplanes, helicopters and other high-altitude aircrafts | 航空器引擎排放 (形成气状与粒状污染物并将其排放至环境中，尤其是平流层中；主要来自飞机、直升飞机和其他高空航空器。) |
| aircraft noise Effective sound output of the various sources of noise associated with aircraft operation, such as propeller and engine exhaust, jet noise, and sonic boom | 航空器噪声 (航空器运转所产生的各种噪音输出，噪音来源包括螺旋桨、引擎排气、喷射噪音和超声波音爆等) |