1.The Falcon 9 Rockets carried a satellite that will operate NASA's tropospheric emissions, monitoring of pollution instrument or Tempo.

猎鹰九搭载了一颗卫星，该卫星将运行NASA的对流污染监测仪器。

2.VOCs and nitrous oxide react with sunlight to produce secondary pollutants called PANs and tropospheric, or ground level, ozone.

VOC 和一氧化二氮与生反应，产生称为 PAN 的二次污染物和对流或地面臭氧。机翻